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)
not similar
(ii)
AAA Similarity
(iii)
SAS Similarity
(iv)
SSS Similarity
Question
2
2.
Identify the property by which the two given triangles are similar
(i)
AAA Similarity
(ii)
not similar
(iii)
SAS Similarity
(iv)
SSS Similarity
Question
3
3.
Identify the property by which the two given triangles are similar
(i)
SAS Similarity
(ii)
not similar
(iii)
SSS Similarity
(iv)
AAA Similarity
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)
not similar
(ii)
SAS Similarity
(iii)
AAA Similarity
(iv)
SSS Similarity
Question
5
5.
In the given figure, △DEF and △QRS are such that
∠E
=
∠R
and
∠F
=
∠S
.
Identify the property by which the two triangles are similar
(i)
SSS Similarity
(ii)
not similar
(iii)
AAA Similarity
(iv)
SAS Similarity
Question
6
6.
In the given figure, △FGH and △STU are such that
FG
ST
=
GH
TU
=
HF
US
.
Identify the property by which the two triangles are similar
(i)
AAA Similarity
(ii)
not similar
(iii)
SAS Similarity
(iv)
SSS Similarity
Question
7
7.
In the given figure,
GH
∥
EF
.
If
DG
GE
=
1
2
and
DF
=
11.2 cm
, find
DH
(i)
3.73 cm
(ii)
5.73 cm
(iii)
2.73 cm
(iv)
1.73 cm
(v)
4.73 cm
Question
8
8.
In the given figure,
PQ
∥
NO
.
If
MP
=
8.21 cm
,
MN
=
11.5 cm
and
MO
=
13.3 cm
, find
MQ
(i)
11.50 cm
(ii)
10.50 cm
(iii)
8.50 cm
(iv)
9.50 cm
(v)
7.50 cm
Question
9
9.
In the given figure, PQ ∥ DE and CD = 21 cm, PQ = 14.4 cm and DE = 24 cm, find CP
(i)
14.6 cm
(ii)
10.6 cm
(iii)
13.6 cm
(iv)
12.6 cm
(v)
11.6 cm
Question
10
10.
In the given figure, △FGH is isosceles right-angled at G and GI ⟂ HF. ∠H =
(i)
∠I
(ii)
∠J
(iii)
∠K
(iv)
∠G
(v)
∠F
Question
11
11.
In the given figure, △NOP is isosceles right-angled at O and OQ ⟂ PN. ∠PQO =
(i)
∠NOQ
(ii)
∠QNO
(iii)
∠OPQ
(iv)
∠QOP
(v)
∠OQN
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.
△FEH ∼
(i)
△DAE
(ii)
△ABH
(iii)
△DCF
(iv)
△FDA
(v)
△ACF
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)
∠FAC
(ii)
∠FEH
(iii)
∠HAB
(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.
∠FDA =
(i)
∠ABH
(ii)
∠DAF
(iii)
∠FEH
(iv)
∠ACF
(v)
∠EHF
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.
∠DAF =
(i)
∠BHA
(ii)
∠HFE
(iii)
∠CFA
(iv)
∠EHF
(v)
∠AFD
Question
16
16.
In the given figure, GHIJ is a trapezium in which
GH ∥ IJ
and the diagonals
HJ
and
GI
intersect at
K
.
If
KG
=
(
4
x
+
19
)
cm,
HK
=
(
3
x
+
21
)
cm,
KI
=
(
2
x
+
19
)
cm and
JK
=
(
x
+
37
)
cm, find the value of x
(i)
(
40
,
-2
)
(ii)
(
-1
,
38
)
(iii)
(
-4
,
37
)
(iv)
(
-3
,
39
)
(v)
(
-4
,
38
)
Question
17
17.
In the given figure, DEFG is a trapezium in which
DE ∥ FG
and the diagonals
EG
and
DF
intersect at
H
.
△HDE
∼
(i)
△HFG
(ii)
△HEF
(iii)
△HGD
(iv)
△GDE
(v)
△EFG
Question
18
18.
In the given figure, the altitudes OE and FP of △DEF meet at N. △PEN ∼
(i)
△PEF
(ii)
△NPO
(iii)
△OFN
(iv)
△OFE
(v)
△NEF
Question
19
19.
In the given figure, the altitudes UG and HV of △FGH meet at T. ∠GTV =
(i)
∠UTH
(ii)
∠TVG
(iii)
∠HUT
(iv)
∠VGT
(v)
∠THU
Question
20
20.
In the given figure, PQ ∥ FG , and median EH bisects PQ.
If EF = 15 cm, EH = 15 cm and EP = 10 cm, IH =
(i)
4.00 cm
(ii)
7.00 cm
(iii)
6.00 cm
(iv)
3.00 cm
(v)
5.00 cm
Question
21
21.
In the given figure, RS ∥ CD , and median BE bisects RS.
If BE = 14.8 cm, BD = 20 cm and BS = 11.11 cm, BF =
(i)
6.22 cm
(ii)
10.22 cm
(iii)
7.22 cm
(iv)
9.22 cm
(v)
8.22 cm
Question
22
22.
In the given figure, PQ ∥ IJ , and median HK bisects PQ.
△HIK ∼
(i)
△HPL
(ii)
△HLQ
(iii)
△HIJ
(iv)
△IJH
(v)
△HKJ
Question
23
23.
In the given figure, △NOP is a triangle in which NQ is the internal bisector of ∠N and PR ∥ QN meeting ON produced at R . ∠NPR =
(i)
∠OQN
(ii)
∠PRN
(iii)
∠QPN
(iv)
∠RNP
(v)
∠NQP
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 = 20 cm, HF = 10 cm, EG = 18 cm and EI = 9 cm
b)
EH = 10 cm, HF = 10 cm, EI = 9 cm and IG = 9 cm
c)
EF = 20 cm, HF = 10 cm, EI = 11 cm and EG = 18 cm
d)
EF = 20 cm, EH = 12 cm, EG = 18 cm and IG = 9 cm
(i)
{c,a}
(ii)
{c,d,a}
(iii)
{c,b,a}
(iv)
{d,b}
(v)
{a,b}
Question
25
25.
In the given figure, the area of the △BCD is x sq.cm. E,F,G are the mid-points of the sides CD , DB and BC respectively. The area of the △EFG is
(i)
1
4
of area of △BCD
(ii)
2
3
of area of △BCD
(iii)
1
2
of area of △BCD
(iv)
3
4
of area of △BCD
(v)
1
3
of area of △BCD
Question
26
26.
In the given figure, the parallelogram EFGH and the triangle △IEF are on the same bases and between the same parallels.
The area of the
△IEF
is x sq.cm. The area of the parallelogram is
(i)
4
3
the area of the triangle
(ii)
3
2
the area of the triangle
(iii)
twice
the area of the triangle
(iv)
5
4
the area of the triangle
(v)
thrice
the area of the triangle
Question
27
27.
If the ratio of the bases of two triangles is M : N and the ratio of the corresponding heights is O : P , the ratio of their areas in the same order is
(i)
MO : NP
(ii)
NO : MP
(iii)
MN : OP
(iv)
MP : NO
(v)
OP : MN
Question
28
28.
In the given △DEF, GH ∥ EF. If DG : GE = 5.33 cm : 10.67 cm and DF = 15 cm, DH =
(i)
4.00 cm
(ii)
6.00 cm
(iii)
5.00 cm
(iv)
3.00 cm
(v)
7.00 cm
Question
29
29.
In the given two similar triangles, if n = 18 cm, o = 19 cm, p = 19 cm, s = 11.4 cm, find q
(i)
8.80 cm
(ii)
10.80 cm
(iii)
12.80 cm
(iv)
9.80 cm
(v)
11.80 cm
Question
30
30.
In the given figure, given ∠KHI = ∠JHK, x : y = 9.71 cm : 7.29 cm and p = 20 cm, find q =
(i)
17.00 cm
(ii)
15.00 cm
(iii)
16.00 cm
(iv)
14.00 cm
(v)
13.00 cm
Question
31
31.
In the given figure, given ∠GDE = ∠FDG, p = 10.31 cm, q = 8.69 cm and EF = 19 cm, find EG =
(i)
9.31 cm
(ii)
12.31 cm
(iii)
11.31 cm
(iv)
10.31 cm
(v)
8.31 cm
Question
32
32.
In the given figure, FGHI is a trapezium where OF = 12 cm , OH = 4 cm and OI = 4 cm . Find OG =
(i)
11 cm
(ii)
14 cm
(iii)
10 cm
(iv)
13 cm
(v)
12 cm
Question
33
33.
In the given figure, ∠LIJ = 41.98°, find the value of x =
(i)
49.02°
(ii)
48.02°
(iii)
46.02°
(iv)
47.02°
(v)
50.02°
Question
34
34.
In the given figure, ∠JKL = 36.87°, find the value of y =
(i)
53.13°
(ii)
51.13°
(iii)
52.13°
(iv)
55.13°
(v)
54.13°
Question
35
35.
In the given figure, if AB ∥ CD then
(i)
△ABE ∼ △DCE
(ii)
△EBA ∼ △EDC
(iii)
△EAB ∼ △ECD
(iv)
△ABE ∼ △ECD
(v)
△ABE ∼ △EDC
Question
36
36.
In the given figure, △CDE is right-angled at D. Also, DF ⟂ CE. Which of the following are true?
a)
DE
2
=
CE
.
CF
b)
DE
2
=
EC
.
EF
c)
CD
2
=
EC
.
EF
d)
CD
2
=
CE
.
CF
e)
DF
2
=
CF
.
FE
(i)
{c,d}
(ii)
{b,d,e}
(iii)
{a,b}
(iv)
{a,b,d}
(v)
{a,c,e}
Question
37
37.
In the given figure, △FGH is right-angled at G. Also, GI ⟂ FH. If GH = 18 cm, GI = 13.07 cm, then find FG.
(i)
18.00 cm
(ii)
21.00 cm
(iii)
20.00 cm
(iv)
19.00 cm
(v)
17.00 cm
Question
38
38.
In the given figure, △IJK is right-angled at J. Also, JL ⟂ IK. If LK = 14.6 cm, JL = 13.78 cm, then find IL.
(i)
13.00 cm
(ii)
12.00 cm
(iii)
14.00 cm
(iv)
15.00 cm
(v)
11.00 cm
Question
39
39.
In the given figure, △ABC ∼ △MNO and AB = 11 cm, MN = 15.4 cm.
If the area of the
△MNO
=
124.86 sq.cm
, find the area of the
△ABC
(i)
65.71 sq.cm
(ii)
61.71 sq.cm
(iii)
62.71 sq.cm
(iv)
63.71 sq.cm
(v)
64.71 sq.cm
Question
40
40.
In the given figure, △ABC ∼ △NOP and BC = 13 cm , OP = 18.2 cm and
AD
=
8.22 cm
,
find the area of the
△NOP
(i)
105.75 sq.cm
(ii)
106.75 sq.cm
(iii)
104.75 sq.cm
(iv)
102.75 sq.cm
(v)
103.75 sq.cm
Question
41
41.
In the given figure, △ABC & △NOP are similar triangles. If the ratio of the heights AD : NQ = 11 : 15, then the ratio of their areas is
(i)
120
sq.cm
:
225
sq.cm
(ii)
121
sq.cm
:
227
sq.cm
(iii)
121
sq.cm
:
225
sq.cm
(iv)
121
sq.cm
:
223
sq.cm
(v)
122
sq.cm
:
225
sq.cm
Question
42
42.
In the given figure, points L , M and N are the mid-points of sides JK, KI and IJ of △IJK. Which of the following are true?
a)
Area of trapezium JKMN is thrice the area of △INM
b)
Area of △IJK = 4 times area of △LMN
c)
Area of
△IJK
=
1
3
area of
△LMN
d)
Area of trapezium
JKMN
is
1
4
the area of
△IJK
e)
All four small triangles have equal areas
(i)
{a,b,e}
(ii)
{c,d,e}
(iii)
{d,b}
(iv)
{c,a,b}
(v)
{c,a}
Question
43
43.
In the given figure, points J , K and L are the mid-points of sides HI, IG and GH of △GHI. Which of the following are true?
a)
△LHJ ∼ △GHI
b)
△JKL ∼ △GHI
c)
△JLK ∼ △GHI
d)
△GLK ∼ △GHI
e)
△KJI ∼ △GHI
(i)
{c,e,a}
(ii)
{c,d}
(iii)
{c,b}
(iv)
{c,a}
(v)
{a,b,d,e}
Question
44
44.
The perimeters of two similar triangles are 34 cm and 25 cm respectively. If one side of the first triangle is 9 cm, find the length of the corresponding side of the second triangle.
(i)
7.62 cm
(ii)
8.62 cm
(iii)
4.62 cm
(iv)
6.62 cm
(v)
5.62 cm
Question
45
45.
In the given figure, K is a point on side IJ of △HIJ such that ∠JHI = ∠HKJ = 101° , ∠KJH = 20°. Find ∠JHK
(i)
61°
(ii)
57°
(iii)
60°
(iv)
58°
(v)
59°
Question
46
46.
IJKL is a square and △IJM is an equilateral triangle. Also, △IKN is an equilateral triangle. If area of △IJM is 'a' sq.units, then the area of △IKN is
(i)
1
2
√
3
a sq.units
(ii)
1
2
a sq.units
(iii)
a
2
sq.units
(iv)
2a sq.units
(v)
√
3
a sq.units
Question
47
47.
GHIJ is a cyclic trapezium. Diagonals HJ and GI intersect at K. If JG = 15 cm, find HI
(i)
14 cm
(ii)
15 cm
(iii)
16 cm
(iv)
13 cm
(v)
17 cm
Question
48
48.
A vertical stick
14 m
long casts a shadow of
11 m
long on the ground.
At the same time, a tower casts the shadow
88 m
long on the ground.
Find the height of the tower.
(i)
112 m
(ii)
113 m
(iii)
114 m
(iv)
111 m
(v)
110 m
Question
49
49.
In the given figure, △DEF, RS ∥ EF such that
area of
△DRS
= area of
RSFE
. Find
DR
DE
(i)
1
2
√
2
(ii)
1
2
√
1
2
(iii)
1
2
√
5
(iv)
1
(v)
1
2
4
√
2
Question
50
50.
In the given figure, ∠LIJ = ∠KIL and IL ∥ MK and IJ = 16 cm, JL = 9 cm and LK = 9 cm. Find IM
(i)
17.00 cm
(ii)
14.00 cm
(iii)
15.00 cm
(iv)
18.00 cm
(v)
16.00 cm
Question
51
51.
In the given figure, IK is the angular bisector of
∠I
&
∠K
HI
=
20 cm
,
IJ
=
20 cm
and
JK
=
24 cm
.
Find
KH
(i)
24.00 cm
(ii)
25.00 cm
(iii)
22.00 cm
(iv)
23.00 cm
(v)
26.00 cm
Question
52
52.
In the given figure, CDE is a triangle and 'O' is a point inside △CDE. The angular bisector of ∠DOC, ∠EOD & ∠COE meet CD, DE & EC at F, G & H respectively . Then
(i)
CF . DG . EH = FG . GH . HF
(ii)
CF . DG . EH = OC . OD . OE
(iii)
CF . DG . EH = CD . DE . EC
(iv)
CF . DG . EH = OF . OG . OH
(v)
CF . DG . EH = FD . GE . HC
Question
53
53.
In the given figure, if A, Q, R, S, T, U are equidistant and RP ∥ UB and AB = 27 cm. Find AP
(i)
8.80 cm
(ii)
9.80 cm
(iii)
11.80 cm
(iv)
10.80 cm
(v)
12.80 cm
Question
54
54.
From the given figure and values, find x
(i)
(
1
,
19
)
(ii)
(
18
,
0
)
(iii)
(
20
,
-1
)
(iv)
(
17
,
-2
)
(v)
(
17
,
-1
)
Question
55
55.
If the measures are as shown in the given figure, find FG
(i)
22.0 cm
(ii)
23.0 cm
(iii)
20.0 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 = 10 cm
,
OY = 24 cm
and radius of the inner circle is
6.4 cm
.
Find the radius of the outer circle.
(i)
16.36 cm
(ii)
14.36 cm
(iii)
17.36 cm
(iv)
15.36 cm
(v)
13.36 cm
Assignment Key
1) (iii)
2) (i)
3) (iii)
4) (ii)
5) (iii)
6) (iv)
7) (i)
8) (iv)
9) (iv)
10) (v)
11) (v)
12) (iv)
13) (iv)
14) (iii)
15) (iv)
16) (v)
17) (i)
18) (iii)
19) (i)
20) (v)
21) (v)
22) (i)
23) (ii)
24) (v)
25) (i)
26) (iii)
27) (i)
28) (iii)
29) (ii)
30) (ii)
31) (iv)
32) (v)
33) (ii)
34) (i)
35) (i)
36) (ii)
37) (iv)
38) (i)
39) (iv)
40) (iii)
41) (iii)
42) (i)
43) (v)
44) (iv)
45) (v)
46) (iv)
47) (ii)
48) (i)
49) (i)
50) (v)
51) (i)
52) (v)
53) (iv)
54) (v)
55) (iv)
56) (iv)