EduSahara™ Assignment
Name : Similarity of Triangles
Chapter : Similarity of Triangles
Grade : ICSE Grade X
License : Non Commercial Use
Question 1
1.
Identify the property by which the two given triangles are similar
  • (i)
    AAA Similarity
  • (ii)
    SAS Similarity
  • (iii)
    SSS Similarity
  • (iv)
    not similar
Question 2
2.
Identify the property by which the two given triangles are similar
  • (i)
    SAS Similarity
  • (ii)
    not similar
  • (iii)
    SSS Similarity
  • (iv)
    AAA Similarity
Question 3
3.
Identify the property by which the two given triangles are similar
  • (i)
    SSS Similarity
  • (ii)
    SAS Similarity
  • (iii)
    AAA Similarity
  • (iv)
    not similar
Question 4
4.
    • In the given figure, △FGH and △TUV are such that
    • ∠G
    • =
    • ∠U
    •  
    • and
    • FG

      TU
    • =
    • GH

      UV
    • .
    • Identify the property by which the two triangles are similar
  • (i)
    SSS Similarity
  • (ii)
    AAA Similarity
  • (iii)
    not similar
  • (iv)
    SAS Similarity
Question 5
5.
    • In the given figure, △DEF and △UVW are such that
    • ∠E
    • =
    • ∠V
    •  
    • and
    •  
    • ∠F
    • =
    • ∠W
    • .
    • Identify the property by which the two triangles are similar
  • (i)
    SAS Similarity
  • (ii)
    SSS Similarity
  • (iii)
    AAA Similarity
  • (iv)
    not similar
Question 6
6.
    • In the given figure, △HIJ and △PQR are such that
    • HI

      PQ
    • =
    • IJ

      QR
    • =
    • JH

      RP
    • .
    • Identify the property by which the two triangles are similar
  • (i)
    not similar
  • (ii)
    AAA Similarity
  • (iii)
    SSS Similarity
  • (iv)
    SAS Similarity
Question 7
7.
    • In the given figure,
    •  
    • GH
    • ∥
    • EF
    • .
    • If
    •  
    • DG

      GE
    • =
    • 4

      5
    • and
    • DF
    • =
    • 11.4 cm
    • , find
    • DH
  • (i)
    3.07 cm
  • (ii)
    6.07 cm
  • (iii)
    7.07 cm
  • (iv)
    5.07 cm
  • (v)
    4.07 cm
Question 8
8.
    • In the given figure,
    •  
    • ST
    • ∥
    • QR
    • .
    • If
    •  
    • PS
    • =
    • 6.96 cm
    • ,
    • PQ
    • =
    • 11.6 cm
    • and
    • PR
    • =
    • 15.3 cm
    • , find
    • PT
  • (i)
    10.18 cm
  • (ii)
    7.18 cm
  • (iii)
    9.18 cm
  • (iv)
    11.18 cm
  • (v)
    8.18 cm
Question 9
9.
In the given figure, ST ∥ BC and AB = 24 cm, ST = 12 cm and BC = 20 cm, find AS
  • (i)
    13.4 cm
  • (ii)
    16.4 cm
  • (iii)
    12.4 cm
  • (iv)
    14.4 cm
  • (v)
    15.4 cm
Question 10
10.
In the given figure, △CDE is isosceles right-angled at D and DF ⟂ EC. ∠E =
  • (i)
    ∠C
  • (ii)
    ∠H
  • (iii)
    ∠D
  • (iv)
    ∠F
  • (v)
    ∠G
Question 11
11.
In the given figure, △IJK is isosceles right-angled at J and JL ⟂ KI. ∠KLJ =
  • (i)
    ∠JKL
  • (ii)
    ∠LIJ
  • (iii)
    ∠LJK
  • (iv)
    ∠IJL
  • (v)
    ∠JLI
Question 12
12.
    • In the given figure, three lines l , m and n are such that l ∥ m ∥ n.
    • Two transversals PQ and RS intersect them at the points A , B , C and D , E , F respectively.
    • △ACF ∼
  • (i)
    △FEH
  • (ii)
    △FDA
  • (iii)
    △DCF
  • (iv)
    △DAE
  • (v)
    △ABH
Question 13
13.
    • In the given figure, three lines l , m and n are such that l ∥ m ∥ n.
    • Two transversals PQ and RS intersect them at the points A , B , C and D , E , F respectively.
    • ∠HFE  =
  • (i)
    ∠HAB
  • (ii)
    ∠AFD
  • (iii)
    ∠FEH
  • (iv)
    ∠FAC
  • (v)
    ∠FDA
Question 14
14.
    • In the given figure, three lines l , m and n are such that l ∥ m ∥ n.
    • Two transversals PQ and RS intersect them at the points A , B , C and D , E , F respectively.
    • ∠ABH  =
  • (i)
    ∠ACF
  • (ii)
    ∠FDA
  • (iii)
    ∠EHF
  • (iv)
    ∠FEH
  • (v)
    ∠DAF
Question 15
15.
    • In the given figure, three lines l , m and n are such that l ∥ m ∥ n.
    • Two transversals PQ and RS intersect them at the points A , B , C and D , E , F respectively.
    • ∠CFA  =
  • (i)
    ∠DAF
  • (ii)
    ∠EHF
  • (iii)
    ∠BHA
  • (iv)
    ∠AFD
  • (v)
    ∠HFE
Question 16
16.
    • In the given figure, DEFG is a trapezium in which
    • DE ∥ FG
    • and the diagonals
    • EG
    • and
    • DF
    • intersect at
    • H
    • .
    • If
    •  
    • HD
    • =
    • (
      12
      x
      +
      8
      )
    • cm,
    • EH
    • =
    • (
      10
      x
      +
      8
      )
    • cm,
    • HF
    • =
    • (
      3
      x
      +
      2
      )
    • cm and
    • GH
    • =
    • (
      2
      x
      +
      8
      )
    • cm, find the value of x
  • (i)
    (
    13
    ,
    (
    -2

    5
    )
    )
  • (ii)
    (
    7

    3
    ,
    14
    )
  • (iii)
    (
    14
    ,
    (
    -2

    3
    )
    )
  • (iv)
    (
    12
    ,
    -2
    )
  • (v)
    (
    12
    ,
    (
    -2

    3
    )
    )
Question 17
17.
    • In the given figure, BCDE is a trapezium in which
    • BC ∥ DE
    • and the diagonals
    • CE
    • and
    • BD
    • intersect at
    • F
    • .
    • △FDE
    •  
    • ∼
  • (i)
    △CDE
  • (ii)
    △EBC
  • (iii)
    △FEB
  • (iv)
    △FCD
  • (v)
    △FBC
Question 18
18.
In the given figure, the altitudes SI and JT of △HIJ meet at R. △TIJ ∼
  • (i)
    △RIJ
  • (ii)
    △TIR
  • (iii)
    △SJI
  • (iv)
    △SJR
  • (v)
    △RTS
Question 19
19.
In the given figure, the altitudes SB and CT of △ABC meet at R. ∠BRT  =
  • (i)
    ∠RCS
  • (ii)
    ∠TBR
  • (iii)
    ∠SRC
  • (iv)
    ∠RTB
  • (v)
    ∠CSR
Question 20
20.
    • In the given figure, TU ∥ BC , and median AD bisects TU.
    • If  AB = 17 cm, AT = 8.5 cm and AE = 8.5 cm,  AD =
  • (i)
    19.00 cm
  • (ii)
    15.00 cm
  • (iii)
    17.00 cm
  • (iv)
    18.00 cm
  • (v)
    16.00 cm
Question 21
21.
    • In the given figure, PQ ∥ HI , and median GJ bisects PQ.
    • If  GJ = 16.2 cm, GI = 17 cm and GQ = 7.29 cm,  GK =
  • (i)
    5.94 cm
  • (ii)
    7.94 cm
  • (iii)
    6.94 cm
  • (iv)
    8.94 cm
  • (v)
    4.94 cm
Question 22
22.
    • In the given figure, QR ∥ CD , and median BE bisects QR.
    •  
    • △BED ∼
  • (i)
    △BFR
  • (ii)
    △CDB
  • (iii)
    △BCE
  • (iv)
    △BQF
  • (v)
    △BCD
Question 23
23.
In the given figure, △OPQ is a triangle in which OR is the internal bisector of ∠O and QS ∥ RO meeting PO produced at S . ∠QOR =
  • (i)
    ∠PRO
  • (ii)
    ∠SOQ
  • (iii)
    ∠ORQ
  • (iv)
    ∠RQO
  • (v)
    ∠ROP
Question 24
24.
In the given figure, H and I are points on the sides EF and EG respectively of △EFG.For which of the following cases, HI ∥ FG
a)
EF = 16 cm, EH = 10.89 cm, EG = 18 cm and IG = 8 cm
b)
EF = 16 cm, HF = 7.11 cm, EG = 18 cm and EI = 10 cm
c)
EH = 8.89 cm, HF = 7.11 cm, EI = 10 cm and IG = 8 cm
d)
EF = 16 cm, HF = 7.11 cm, EI = 12 cm and EG = 18 cm
  • (i)
    {a,d,b}
  • (ii)
    {a,c,b}
  • (iii)
    {d,c}
  • (iv)
    {a,b}
  • (v)
    {b,c}
Question 25
25.
In the given figure, the area of the △KLM is x sq.cm. N,O,P are the mid-points of the sides LM , MK and KL respectively. The area of the △NOP is
  • (i)
      • 1

        3
      • of area of △KLM
  • (ii)
      • 2

        3
      • of area of △KLM
  • (iii)
      • 1

        2
      • of area of △KLM
  • (iv)
      • 1

        4
      • of area of △KLM
  • (v)
      • 3

        4
      • of area of △KLM
Question 26
26.
    • In the given figure, the parallelogram LMNO and the triangle △PLM are on the same bases and between the same parallels.
    • The area of the
    • △PLM
    • is x sq.cm. The area of the parallelogram is
  • (i)
      • 5

        4
      • the area of the triangle
  • (ii)
      • thrice
      • the area of the triangle
  • (iii)
      • 4

        3
      • the area of the triangle
  • (iv)
      • 3

        2
      • the area of the triangle
  • (v)
      • twice
      • the area of the triangle
Question 27
27.
If the ratio of the bases of two triangles is E : F and the ratio of the corresponding heights is G : H , the ratio of their areas in the same order is
  • (i)
    EH : FG
  • (ii)
    EF : GH
  • (iii)
    GH : EF
  • (iv)
    FG : EH
  • (v)
    EG : FH
Question 28
28.
In the given △GHI, JK ∥ HI. If  GJ : JH = 8.64 cm : 10.36 cm  and  GI = 20 cm, KI =
  • (i)
    9.91 cm
  • (ii)
    11.91 cm
  • (iii)
    10.91 cm
  • (iv)
    12.91 cm
  • (v)
    8.91 cm
Question 29
29.
In the given two similar triangles, if b = 20 cm, c = 15 cm, d = 17 cm, g = 10.2 cm, find e
  • (i)
    10.00 cm
  • (ii)
    13.00 cm
  • (iii)
    12.00 cm
  • (iv)
    14.00 cm
  • (v)
    11.00 cm
Question 30
30.
In the given figure, given ∠KHI = ∠JHK, x : y = 9 cm : 9 cm and p = 18 cm, find q =
  • (i)
    20.00 cm
  • (ii)
    16.00 cm
  • (iii)
    19.00 cm
  • (iv)
    18.00 cm
  • (v)
    17.00 cm
Question 31
31.
In the given figure, given ∠GDE = ∠FDG, p = 9.77 cm, q = 9.23 cm and EF = 19 cm, find GF =
  • (i)
    10.23 cm
  • (ii)
    9.23 cm
  • (iii)
    7.23 cm
  • (iv)
    8.23 cm
  • (v)
    11.23 cm
Question 32
32.
In the given figure, DEFG is a trapezium where OE = 13 cm , OF = 4 cm and OG = 4 cm . Find OD =
  • (i)
    11 cm
  • (ii)
    13 cm
  • (iii)
    12 cm
  • (iv)
    14 cm
  • (v)
    15 cm
Question 33
33.
In the given figure, ∠HEF = 48.45°, find the value of x =
  • (i)
    43.55°
  • (ii)
    40.55°
  • (iii)
    39.55°
  • (iv)
    42.55°
  • (v)
    41.55°
Question 34
34.
In the given figure, ∠JKL = 42.93°, find the value of y =
  • (i)
    47.07°
  • (ii)
    45.07°
  • (iii)
    48.07°
  • (iv)
    49.07°
  • (v)
    46.07°
Question 35
35.
In the given figure, if FG ∥ HI then
  • (i)
    △JFG ∼ △JHI
  • (ii)
    △FGJ ∼ △JIH
  • (iii)
    △JGF ∼ △JIH
  • (iv)
    △FGJ ∼ △IHJ
  • (v)
    △FGJ ∼ △JHI
Question 36
36.
In the given figure, △GHI is right-angled at H. Also, HJ ⟂ GI. Which of the following are true?
a)
    • HI
      2
    • =
    • IG
    • .
    • IJ
b)
    • GH
      2
    • =
    • GI
    • .
    • GJ
c)
    • GH
      2
    • =
    • IG
    • .
    • IJ
d)
    • HI
      2
    • =
    • GI
    • .
    • GJ
e)
    • HJ
      2
    • =
    • GJ
    • .
    • JI
  • (i)
    {a,b,e}
  • (ii)
    {c,d,e}
  • (iii)
    {c,a}
  • (iv)
    {c,a,b}
  • (v)
    {d,b}
Question 37
37.
In the given figure, △HIJ is right-angled at I. Also, IK ⟂ HJ. If  HI = 17 cm, IJ = 20 cm, then find IK.
  • (i)
    13.95 cm
  • (ii)
    12.95 cm
  • (iii)
    14.95 cm
  • (iv)
    11.95 cm
  • (v)
    10.95 cm
Question 38
38.
In the given figure, △GHI is right-angled at H. Also, HJ ⟂ GI. If  GJ = 9 cm, HJ = 12 cm, then find JI.
  • (i)
    14.00 cm
  • (ii)
    18.00 cm
  • (iii)
    17.00 cm
  • (iv)
    16.00 cm
  • (v)
    15.00 cm
Question 39
39.
    • In the given figure, △DEF ∼ △MNO and DE = 13 cm, MN = 18.2 cm.
    • If the area of the
    • △MNO
    • =
    • 122.28 sq.cm
    • , find the area of the
    • △DEF
  • (i)
    63.39 sq.cm
  • (ii)
    60.39 sq.cm
  • (iii)
    62.39 sq.cm
  • (iv)
    64.39 sq.cm
  • (v)
    61.39 sq.cm
Question 40
40.
    • In the given figure, △BCD ∼ △PQR and CD = 13 cm , QR = 18.2 cm and
    • PS
    • =
    • 16.52 cm
    • ,
    • find the area of the
    • △BCD
  • (i)
    76.68 sq.cm
  • (ii)
    74.68 sq.cm
  • (iii)
    78.68 sq.cm
  • (iv)
    75.68 sq.cm
  • (v)
    77.68 sq.cm
Question 41
41.
In the given figure, △ABC & △OPQ are similar triangles. If the ratio of the heights AD : OR = 13 : 18, then the ratio of their areas is
  • (i)
    169
    sq.cm
    :
    324
    sq.cm
  • (ii)
    169
    sq.cm
    :
    321
    sq.cm
  • (iii)
    168
    sq.cm
    :
    324
    sq.cm
  • (iv)
    169
    sq.cm
    :
    327
    sq.cm
  • (v)
    170
    sq.cm
    :
    324
    sq.cm
Question 42
42.
In the given figure, points K , L and M are the mid-points of sides IJ, JH and HI of △HIJ. Which of the following are true?
a)
Area of △HIJ = 4 times area of △KLM
b)
    • Area of
    • △HIJ
    • =
    • 1

      3
    • area of
    • △KLM
c)
    • Area of trapezium
    • IJLM
    • is
    • 1

      4
    • the area of
    • △HIJ
d)
Area of trapezium IJLM is thrice the area of △HML
e)
All four small triangles have equal areas
  • (i)
    {a,d,e}
  • (ii)
    {b,a,d}
  • (iii)
    {b,a}
  • (iv)
    {b,c,e}
  • (v)
    {c,d}
Question 43
43.
In the given figure, points O , P and Q are the mid-points of sides MN, NL and LM of △LMN. Which of the following are true?
a)
△QMO ∼ △LMN
b)
△LQP ∼ △LMN
c)
△OQP ∼ △LMN
d)
△OPQ ∼ △LMN
e)
△PON ∼ △LMN
  • (i)
    {c,e,a}
  • (ii)
    {c,b}
  • (iii)
    {c,d}
  • (iv)
    {a,b,d,e}
  • (v)
    {c,a}
Question 44
44.
The perimeters of two similar triangles are 31 cm and 23 cm respectively. If one side of the first triangle is 12 cm, find the length of the corresponding side of the second triangle.
  • (i)
    9.90 cm
  • (ii)
    10.90 cm
  • (iii)
    6.90 cm
  • (iv)
    8.90 cm
  • (v)
    7.90 cm
Question 45
45.
In the given figure, J is a point on side HI of △GHI such that ∠IGH = ∠GJI = 109° , ∠JIG = 22°. Find ∠IGJ
  • (i)
    49°
  • (ii)
    48°
  • (iii)
    51°
  • (iv)
    47°
  • (v)
    50°
Question 46
46.
HIJK is a square and △HIL is an equilateral triangle. Also, △HJM is an equilateral triangle. If area of △HIL is 'a' sq.units, then the area of △HJM is
  • (i)
      • a
        2
      • sq.units
  • (ii)
      • 2a sq.units
  • (iii)
      • 1

        2
      • a sq.units
  • (iv)
      • 1

        2

        √


        3
      • a sq.units
  • (v)

      • √


        3
      • a sq.units
Question 47
47.
CDEF is a cyclic trapezium. Diagonals DF and CE intersect at G. If FC = 15 cm, find DE
  • (i)
    14 cm
  • (ii)
    17 cm
  • (iii)
    16 cm
  • (iv)
    13 cm
  • (v)
    15 cm
Question 48
48.
    • A vertical stick
    • 14 m
    • long casts a shadow of
    • 15 m
    • long on the ground.
    • At the same time, a tower casts the shadow
    • 120 m
    • long on the ground.
    • Find the height of the tower.
  • (i)
    112 m
  • (ii)
    114 m
  • (iii)
    113 m
  • (iv)
    111 m
  • (v)
    110 m
Question 49
49.
    • In the given figure, △ABC, RS ∥ BC such that
    • area of
    •  
    • △ARS
    • = area of
    •  
    • RSCB
    • . Find
    •  
    • AR

      AB
  • (i)
    1

    2

    √


    1

    2
  • (ii)
    1

    2

    √


    2
  • (iii)
    1

    2

    √


    4
  • (iv)
    1

    2
    4
    √


    2
  • (v)
    1
Question 50
50.
In the given figure, ∠EBC = ∠DBE and BE ∥ FD and BC = 19 cm, CE = 7 cm and ED = 8 cm. Find BF
  • (i)
    21.71 cm
  • (ii)
    19.71 cm
  • (iii)
    23.71 cm
  • (iv)
    20.71 cm
  • (v)
    22.71 cm
Question 51
51.
    • In the given figure, JL is the angular bisector of
    • ∠J
    • &
    • ∠L
    • IJ
    • =
    • 20 cm
    • ,
    • JK
    • =
    • 20 cm
    • and
    • KL
    • =
    • 17 cm
    • .
    • Find
    • LI
  • (i)
    19.00 cm
  • (ii)
    15.00 cm
  • (iii)
    18.00 cm
  • (iv)
    16.00 cm
  • (v)
    17.00 cm
Question 52
52.
In the given figure, BCD is a triangle and 'O' is a point inside △BCD. The angular bisector of ∠COB, ∠DOC & ∠BOD meet BC, CD & DB at E, F & G respectively . Then
  • (i)
    BE . CF . DG = EF . FG . GE
  • (ii)
    BE . CF . DG = OE . OF . OG
  • (iii)
    BE . CF . DG = EC . FD . GB
  • (iv)
    BE . CF . DG = OB . OC . OD
  • (v)
    BE . CF . DG = BC . CD . DB
Question 53
53.
In the given figure, if A, Q, R, S, T, U are equidistant and RP ∥ UB and AB = 22 cm. Find AP
  • (i)
    9.80 cm
  • (ii)
    6.80 cm
  • (iii)
    7.80 cm
  • (iv)
    8.80 cm
  • (v)
    10.80 cm
Question 54
54.
From the given figure and values, find x
  • (i)
    (
    23
    ,
    23
    )
  • (ii)
    (
    22
    ,
    22
    )
  • (iii)
    (
    21
    ,
    21
    )
  • (iv)
    (
    23
    ,
    21
    )
  • (v)
    (
    21
    ,
    20
    )
Question 55
55.
If the measures are as shown in the given figure, find  CD
  • (i)
    20.0 cm
  • (ii)
    22.0 cm
  • (iii)
    23.0 cm
  • (iv)
    21.0 cm
  • (v)
    19.0 cm
Question 56
56.
    • In the given figure, the two circles touch each other internally.
    • Diameter
    • OB
    • passes through the centre of the smaller circle.
    • OX = 9 cm
    • ,
    • OY = 20 cm
    • and radius of the inner circle is
    • 5.5 cm
    • .
    • Find the radius of the outer circle.
  • (i)
    14.22 cm
  • (ii)
    12.22 cm
  • (iii)
    10.22 cm
  • (iv)
    11.22 cm
  • (v)
    13.22 cm
    Assignment Key

  •  1) (ii)
  •  2) (iv)
  •  3) (i)
  •  4) (iv)
  •  5) (iii)
  •  6) (iii)
  •  7) (iv)
  •  8) (iii)
  •  9) (iv)
  •  10) (i)
  •  11) (v)
  •  12) (v)
  •  13) (ii)
  •  14) (i)
  •  15) (iii)
  •  16) (v)
  •  17) (v)
  •  18) (iii)
  •  19) (iii)
  •  20) (iii)
  •  21) (iii)
  •  22) (i)
  •  23) (v)
  •  24) (v)
  •  25) (iv)
  •  26) (v)
  •  27) (v)
  •  28) (iii)
  •  29) (iii)
  •  30) (iv)
  •  31) (ii)
  •  32) (ii)
  •  33) (v)
  •  34) (i)
  •  35) (iv)
  •  36) (i)
  •  37) (ii)
  •  38) (iv)
  •  39) (iii)
  •  40) (i)
  •  41) (i)
  •  42) (i)
  •  43) (iv)
  •  44) (iv)
  •  45) (i)
  •  46) (ii)
  •  47) (v)
  •  48) (i)
  •  49) (ii)
  •  50) (i)
  •  51) (v)
  •  52) (iii)
  •  53) (iv)
  •  54) (iii)
  •  55) (iv)
  •  56) (ii)