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)
    SSS Similarity
  • (ii)
    AAA Similarity
  • (iii)
    SAS Similarity
  • (iv)
    not similar
Question 2
2.
Identify the property by which the two given triangles are similar
  • (i)
    SSS Similarity
  • (ii)
    AAA Similarity
  • (iii)
    SAS Similarity
  • (iv)
    not similar
Question 3
3.
Identify the property by which the two given triangles are similar
  • (i)
    SSS Similarity
  • (ii)
    AAA Similarity
  • (iii)
    SAS Similarity
  • (iv)
    not similar
Question 4
4.
    • In the given figure, △FGH and △PQR are such that
    • ∠G
    • =
    • ∠Q
    •  
    • and
    • FG

      PQ
    • =
    • GH

      QR
    • .
    • Identify the property by which the two triangles are similar
  • (i)
    AAA Similarity
  • (ii)
    not similar
  • (iii)
    SSS Similarity
  • (iv)
    SAS Similarity
Question 5
5.
    • In the given figure, △CDE and △STU are such that
    • ∠D
    • =
    • ∠T
    •  
    • and
    •  
    • ∠E
    • =
    • ∠U
    • .
    • Identify the property by which the two triangles are similar
  • (i)
    not similar
  • (ii)
    SSS Similarity
  • (iii)
    AAA Similarity
  • (iv)
    SAS Similarity
Question 6
6.
    • In the given figure, △EFG and △STU are such that
    • EF

      ST
    • =
    • FG

      TU
    • =
    • GE

      US
    • .
    • Identify the property by which the two triangles are similar
  • (i)
    AAA Similarity
  • (ii)
    SAS Similarity
  • (iii)
    not similar
  • (iv)
    SSS Similarity
Question 7
7.
    • In the given figure,
    •  
    • PQ
    • NO
    • .
    • If
    •  
    • MP

      PN
    • =
    • 1

      2
    • and
    • MO
    • =
    • 10.8 cm
    • , find
    • MQ
  • (i)
    4.60 cm
  • (ii)
    5.60 cm
  • (iii)
    3.60 cm
  • (iv)
    2.60 cm
  • (v)
    1.60 cm
Question 8
8.
    • In the given figure,
    •  
    • IJ
    • GH
    • .
    • If
    •  
    • FI
    • =
    • 7.73 cm
    • ,
    • FG
    • =
    • 11.6 cm
    • and
    • FH
    • =
    • 15.4 cm
    • , find
    • FJ
  • (i)
    10.27 cm
  • (ii)
    11.27 cm
  • (iii)
    12.27 cm
  • (iv)
    9.27 cm
  • (v)
    8.27 cm
Question 9
9.
In the given figure, ST ∥ BC and AS = 14.4 cm, ST = 14.4 cm and BC = 24 cm, find AB
  • (i)
    25.0 cm
  • (ii)
    22.0 cm
  • (iii)
    26.0 cm
  • (iv)
    24.0 cm
  • (v)
    23.0 cm
Question 10
10.
In the given figure, △LMN is isosceles right-angled at M and MO ⟂ NL. ∠L =
  • (i)
    ∠Q
  • (ii)
    ∠N
  • (iii)
    ∠M
  • (iv)
    ∠P
  • (v)
    ∠O
Question 11
11.
In the given figure, △JKL is isosceles right-angled at K and KM ⟂ LJ. ∠LMK =
  • (i)
    ∠MJK
  • (ii)
    ∠KLM
  • (iii)
    ∠JKM
  • (iv)
    ∠MKL
  • (v)
    ∠KMJ
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.
    • ∠HAB  =
  • (i)
    ∠FEH
  • (ii)
    ∠HFE
  • (iii)
    ∠FAC
  • (iv)
    ∠AFD
  • (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.
    • ∠ACF  =
  • (i)
    ∠FDA
  • (ii)
    ∠EHF
  • (iii)
    ∠ABH
  • (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.
    • ∠BHA  =
  • (i)
    ∠EHF
  • (ii)
    ∠CFA
  • (iii)
    ∠AFD
  • (iv)
    ∠HFE
  • (v)
    ∠DAF
Question 16
16.
    • In the given figure, KLMN is a trapezium in which
    • KL ∥ MN
    • and the diagonals
    • LN
    • and
    • KM
    • intersect at
    • O
    • .
    • If
    •  
    • OK
    • =
    • (
      2
      x
      +
      13
      )
    • cm,
    • LO
    • =
    • (
      2
      x
      +
      40
      )
    • cm,
    • OM
    • =
    • (
      x
      +
      66
      )
    • cm and
    • NO
    • =
    • (
      2
      x
      +
      20
      )
    • cm, find the value of x
  • (i)
    (
    -14
    ,
    70
    )
  • (ii)
    (
    -16
    ,
    71
    )
  • (iii)
    (
    -17
    ,
    69
    )
  • (iv)
    (
    -17
    ,
    70
    )
  • (v)
    (
    72
    ,
    -15
    )
Question 17
17.
    • In the given figure, DEFG is a trapezium in which
    • DE ∥ FG
    • and the diagonals
    • EG
    • and
    • DF
    • intersect at
    • H
    • .
    • △HFG
    •  
  • (i)
    △HGD
  • (ii)
    △HDE
  • (iii)
    △GDE
  • (iv)
    △HEF
  • (v)
    △EFG
Question 18
18.
In the given figure, the altitudes NF and GO of △EFG meet at M. △MON ∼
  • (i)
    △OFM
  • (ii)
    △MFG
  • (iii)
    △NGF
  • (iv)
    △NGM
  • (v)
    △OFG
Question 19
19.
In the given figure, the altitudes QB and CR of △ABC meet at P. ∠CQP  =
  • (i)
    ∠PRB
  • (ii)
    ∠RBP
  • (iii)
    ∠QPC
  • (iv)
    ∠BPR
  • (v)
    ∠PCQ
Question 20
20.
    • In the given figure, QR ∥ EF , and median DG bisects QR.
    • If  DE = 15 cm, DQ = 8.57 cm and DH = 8.63 cm,  DG =
  • (i)
    13.10 cm
  • (ii)
    14.10 cm
  • (iii)
    15.10 cm
  • (iv)
    16.10 cm
  • (v)
    17.10 cm
Question 21
21.
    • In the given figure, RS ∥ FG , and median EH bisects RS.
    • If  EH = 13.9 cm, EG = 15 cm and EI = 8.69 cm,  SG =
  • (i)
    4.62 cm
  • (ii)
    3.62 cm
  • (iii)
    7.62 cm
  • (iv)
    6.62 cm
  • (v)
    5.62 cm
Question 22
22.
    • In the given figure, QR ∥ BC , and median AD bisects QR.
    •  
    • △ADC ∼
  • (i)
    △AQE
  • (ii)
    △ABD
  • (iii)
    △ABC
  • (iv)
    △AER
  • (v)
    △BCA
Question 23
23.
In the given figure, △MNO is a triangle in which MP is the internal bisector of ∠M and OQ ∥ PM meeting NM produced at Q . ∠OMP =
  • (i)
    ∠NPM
  • (ii)
    ∠MPO
  • (iii)
    ∠POM
  • (iv)
    ∠QMO
  • (v)
    ∠MOQ
Question 24
24.
In the given figure, Q and R are points on the sides NO and NP respectively of △NOP.For which of the following cases, QR ∥ OP
a)
NO = 17 cm, NQ = 9.56 cm, NP = 17 cm and RP = 9.44 cm
b)
NQ = 7.56 cm, QO = 9.44 cm, NR = 7.56 cm and RP = 9.44 cm
c)
NO = 17 cm, QO = 9.44 cm, NP = 17 cm and NR = 7.56 cm
d)
NO = 17 cm, QO = 9.44 cm, NR = 9.56 cm and NP = 17 cm
  • (i)
    {d,c}
  • (ii)
    {a,b}
  • (iii)
    {a,d,b}
  • (iv)
    {b,c}
  • (v)
    {a,c,b}
Question 25
25.
In the given figure, the area of the △HIJ is x sq.cm. K,L,M are the mid-points of the sides IJ , JH and HI respectively. The area of the △KLM is
  • (i)
      • 3

        4
      • of area of △HIJ
  • (ii)
      • 1

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

        4
      • of area of △HIJ
  • (iv)
      • 1

        2
      • of area of △HIJ
  • (v)
      • 2

        3
      • of area of △HIJ
Question 26
26.
    • In the given figure, the parallelogram FGHI and the triangle △JFG are on the same bases and between the same parallels.
    • The area of the
    • △JFG
    • is x sq.cm. The area of the parallelogram is
  • (i)
      • twice
      • the area of the triangle
  • (ii)
      • thrice
      • the area of the triangle
  • (iii)
      • 5

        4
      • the area of the triangle
  • (iv)
      • 3

        2
      • the area of the triangle
  • (v)
      • 4

        3
      • 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)
    EG : FH
  • (ii)
    GH : EF
  • (iii)
    EF : GH
  • (iv)
    FG : EH
  • (v)
    EH : FG
Question 28
28.
In the given △EFG, HI ∥ FG. If  EH : HF = 8.57 cm : 6.43 cm  and  EG = 20 cm, EI =
  • (i)
    10.43 cm
  • (ii)
    12.43 cm
  • (iii)
    9.43 cm
  • (iv)
    13.43 cm
  • (v)
    11.43 cm
Question 29
29.
In the given two similar triangles, if f = 15 cm, g = 17 cm, h = 18 cm, j = 10.2 cm, find k
  • (i)
    9.80 cm
  • (ii)
    12.80 cm
  • (iii)
    11.80 cm
  • (iv)
    8.80 cm
  • (v)
    10.80 cm
Question 30
30.
In the given figure, given ∠GDE = ∠FDG, x : y = 8.24 cm : 8.76 cm and p = 16 cm, find q =
  • (i)
    17.00 cm
  • (ii)
    18.00 cm
  • (iii)
    15.00 cm
  • (iv)
    16.00 cm
  • (v)
    19.00 cm
Question 31
31.
In the given figure, given ∠JGH = ∠IGJ, p = 9 cm, q = 9 cm and HI = 18 cm, find JI =
  • (i)
    8.00 cm
  • (ii)
    10.00 cm
  • (iii)
    11.00 cm
  • (iv)
    9.00 cm
  • (v)
    7.00 cm
Question 32
32.
In the given figure, DEFG is a trapezium where OD = 12 cm , OE = 12 cm and OF = 4 cm . Find OG =
  • (i)
    3 cm
  • (ii)
    4 cm
  • (iii)
    5 cm
  • (iv)
    6 cm
  • (v)
    2 cm
Question 33
33.
In the given figure, ∠JGH = 46.98°, find the value of x =
  • (i)
    45.02°
  • (ii)
    42.02°
  • (iii)
    44.02°
  • (iv)
    41.02°
  • (v)
    43.02°
Question 34
34.
In the given figure, ∠FDE = 48.62°, find the value of y =
  • (i)
    39.38°
  • (ii)
    41.38°
  • (iii)
    40.38°
  • (iv)
    42.38°
  • (v)
    43.38°
Question 35
35.
In the given figure, if CD ∥ EF then
  • (i)
    △GDC ∼ △GFE
  • (ii)
    △CDG ∼ △FEG
  • (iii)
    △CDG ∼ △GFE
  • (iv)
    △CDG ∼ △GEF
  • (v)
    △GCD ∼ △GEF
Question 36
36.
In the given figure, △FGH is right-angled at G. Also, GI ⟂ FH. Which of the following are true?
a)
    • FG
      2
    • =
    • FH
    • .
    • FI
b)
    • FG
      2
    • =
    • HF
    • .
    • HI
c)
    • GH
      2
    • =
    • FH
    • .
    • FI
d)
    • GH
      2
    • =
    • HF
    • .
    • HI
e)
    • GI
      2
    • =
    • FI
    • .
    • IH
  • (i)
    {b,a,d}
  • (ii)
    {c,d}
  • (iii)
    {b,c,e}
  • (iv)
    {a,d,e}
  • (v)
    {b,a}
Question 37
37.
In the given figure, △CDE is right-angled at D. Also, DF ⟂ CE. If  CD = 20 cm, DF = 13.38 cm, then find DE.
  • (i)
    20.00 cm
  • (ii)
    17.00 cm
  • (iii)
    19.00 cm
  • (iv)
    16.00 cm
  • (v)
    18.00 cm
Question 38
38.
In the given figure, △BCD is right-angled at C. Also, CE ⟂ BD. If  BE = 13.1 cm, ED = 11.7 cm, then find CE.
  • (i)
    12.38 cm
  • (ii)
    14.38 cm
  • (iii)
    11.38 cm
  • (iv)
    13.38 cm
  • (v)
    10.38 cm
Question 39
39.
    • In the given figure, △EFG ∼ △MNO and EF = 12 cm, MN = 16.8 cm.
    • If the area of the
    • △EFG
    • =
    • 78.93 sq.cm
    • , find the area of the
    • △MNO
  • (i)
    153.70 sq.cm
  • (ii)
    155.70 sq.cm
  • (iii)
    154.70 sq.cm
  • (iv)
    152.70 sq.cm
  • (v)
    156.70 sq.cm
Question 40
40.
    • In the given figure, △BCD ∼ △OPQ and CD = 13 cm , PQ = 18.2 cm and
    • OR
    • =
    • 14.9 cm
    • ,
    • find the area of the
    • △BCD
  • (i)
    68.20 sq.cm
  • (ii)
    70.20 sq.cm
  • (iii)
    67.20 sq.cm
  • (iv)
    71.20 sq.cm
  • (v)
    69.20 sq.cm
Question 41
41.
In the given figure, △EFG & △MNO are similar triangles. If the ratio of the heights EH : MP = 10 : 14, then the ratio of their areas is
  • (i)
    101
    sq.cm
    :
    196
    sq.cm
  • (ii)
    100
    sq.cm
    :
    193
    sq.cm
  • (iii)
    100
    sq.cm
    :
    196
    sq.cm
  • (iv)
    99
    sq.cm
    :
    196
    sq.cm
  • (v)
    100
    sq.cm
    :
    199
    sq.cm
Question 42
42.
In the given figure, points M , N and O are the mid-points of sides KL, LJ and JK of △JKL. Which of the following are true?
a)
All four small triangles have equal areas
b)
Area of △JKL = 4 times area of △MNO
c)
Area of trapezium KLNO is thrice the area of △JON
d)
    • Area of trapezium
    • KLNO
    • is
    • 1

      4
    • the area of
    • △JKL
e)
    • Area of
    • △JKL
    • =
    • 1

      3
    • area of
    • △MNO
  • (i)
    {d,a}
  • (ii)
    {d,a,b}
  • (iii)
    {e,b}
  • (iv)
    {d,e,c}
  • (v)
    {a,b,c}
Question 43
43.
In the given figure, points G , H and I are the mid-points of sides EF, FD and DE of △DEF. Which of the following are true?
a)
△GIH ∼ △DEF
b)
△DIH ∼ △DEF
c)
△GHI ∼ △DEF
d)
△HGF ∼ △DEF
e)
△IEG ∼ △DEF
  • (i)
    {a,e,b}
  • (ii)
    {b,c,d,e}
  • (iii)
    {a,d}
  • (iv)
    {a,b}
  • (v)
    {a,c}
Question 44
44.
The perimeters of two similar triangles are 30 cm and 15 cm respectively. If one side of the first triangle is 16 cm, find the length of the corresponding side of the second triangle.
  • (i)
    6.00 cm
  • (ii)
    9.00 cm
  • (iii)
    7.00 cm
  • (iv)
    8.00 cm
  • (v)
    10.00 cm
Question 45
45.
In the given figure, F is a point on side DE of △CDE such that ∠ECD = ∠CFE = 110° , ∠FEC = 26°. Find ∠ECF
  • (i)
    44°
  • (ii)
    45°
  • (iii)
    46°
  • (iv)
    42°
  • (v)
    43°
Question 46
46.
LMNO is a square and △LMP is an equilateral triangle. Also, △LNQ is an equilateral triangle. If area of △LMP is 'a' sq.units, then the area of △LNQ is
  • (i)
      • 1

        2



        3
      • a sq.units
  • (ii)
      • a
        2
      • sq.units
  • (iii)
      • 2a sq.units
  • (iv)
      • 1

        2
      • 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 = 17 cm, find DE
  • (i)
    17 cm
  • (ii)
    16 cm
  • (iii)
    15 cm
  • (iv)
    19 cm
  • (v)
    18 cm
Question 48
48.
    • A vertical stick
    • 16 m
    • long casts a shadow of
    • 12 m
    • long on the ground.
    • At the same time, a tower casts the shadow
    • 96 m
    • long on the ground.
    • Find the height of the tower.
  • (i)
    130 m
  • (ii)
    127 m
  • (iii)
    126 m
  • (iv)
    128 m
  • (v)
    129 m
Question 49
49.
    • In the given figure, △BCD, QR ∥ CD such that
    • area of
    •  
    • △BQR
    • = area of
    •  
    • QRDC
    • . Find
    •  
    • BQ

      BC
  • (i)
    1

    2



    4
  • (ii)
    1
  • (iii)
    1

    2
    4


    2
  • (iv)
    1

    2



    1

    2
  • (v)
    1

    2



    2
Question 50
50.
In the given figure, ∠NKL = ∠MKN and KN ∥ OM and KL = 17 cm, LN = 9 cm and NM = 11 cm. Find KO
  • (i)
    18.78 cm
  • (ii)
    22.78 cm
  • (iii)
    19.78 cm
  • (iv)
    20.78 cm
  • (v)
    21.78 cm
Question 51
51.
    • In the given figure, BD is the angular bisector of
    • ∠B
    • &
    • ∠D
    • AB
    • =
    • 20 cm
    • ,
    • BC
    • =
    • 20 cm
    • and
    • CD
    • =
    • 19 cm
    • .
    • Find
    • DA
  • (i)
    20.00 cm
  • (ii)
    18.00 cm
  • (iii)
    19.00 cm
  • (iv)
    21.00 cm
  • (v)
    17.00 cm
Question 52
52.
In the given figure, ABC is a triangle and 'O' is a point inside △ABC. The angular bisector of ∠BOA, ∠COB & ∠AOC meet AB, BC & CA at D, E & F respectively . Then
  • (i)
    AD . BE . CF = DB . EC . FA
  • (ii)
    AD . BE . CF = OD . OE . OF
  • (iii)
    AD . BE . CF = AB . BC . CA
  • (iv)
    AD . BE . CF = OA . OB . OC
  • (v)
    AD . BE . CF = DE . EF . FD
Question 53
53.
In the given figure, if A, Q, R, S, T, U are equidistant and RP ∥ UB and AB = 23 cm. Find AP
  • (i)
    9.20 cm
  • (ii)
    10.20 cm
  • (iii)
    11.20 cm
  • (iv)
    7.20 cm
  • (v)
    8.20 cm
Question 54
54.
From the given figure and values, find x
  • (i)
    (
    -6
    ,
    23
    )
  • (ii)
    (
    -3
    ,
    24
    )
  • (iii)
    (
    26
    ,
    -4
    )
  • (iv)
    (
    -5
    ,
    25
    )
  • (v)
    (
    -6
    ,
    24
    )
Question 55
55.
If the measures are as shown in the given figure, find  CD
  • (i)
    23.0 cm
  • (ii)
    22.0 cm
  • (iii)
    25.0 cm
  • (iv)
    24.0 cm
  • (v)
    26.0 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 = 10 cm
    • ,
    • OY = 24 cm
    • and radius of the inner circle is
    • 6.1 cm
    • .
    • Find the radius of the outer circle.
  • (i)
    12.64 cm
  • (ii)
    15.64 cm
  • (iii)
    16.64 cm
  • (iv)
    14.64 cm
  • (v)
    13.64 cm
    Assignment Key

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