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)