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)
SAS Similarity
(ii)
SSS Similarity
(iii)
not similar
(iv)
AAA Similarity
Question
2
2.
Identify the property by which the two given triangles are similar
(i)
SAS Similarity
(ii)
SSS Similarity
(iii)
AAA Similarity
(iv)
not similar
Question
3
3.
Identify the property by which the two given triangles are similar
(i)
not similar
(ii)
SAS Similarity
(iii)
AAA Similarity
(iv)
SSS Similarity
Question
4
4.
In the given figure, △GHI and △QRS are such that
∠H
=
∠R
and
GH
QR
=
HI
RS
.
Identify the property by which the two triangles are similar
(i)
SAS Similarity
(ii)
not similar
(iii)
AAA Similarity
(iv)
SSS Similarity
Question
5
5.
In the given figure, △ABC and △PQR are such that
∠B
=
∠Q
and
∠C
=
∠R
.
Identify the property by which the two triangles are similar
(i)
not similar
(ii)
AAA Similarity
(iii)
SAS Similarity
(iv)
SSS Similarity
Question
6
6.
In the given figure, △FGH and △UVW are such that
FG
UV
=
GH
VW
=
HF
WU
.
Identify the property by which the two triangles are similar
(i)
not similar
(ii)
SSS Similarity
(iii)
SAS Similarity
(iv)
AAA Similarity
Question
7
7.
In the given figure,
MN
∥
KL
.
If
JM
MK
=
4
5
and
JL
=
13.7 cm
, find
JN
(i)
8.09 cm
(ii)
4.09 cm
(iii)
6.09 cm
(iv)
5.09 cm
(v)
7.09 cm
Question
8
8.
In the given figure,
HI
∥
FG
.
If
EH
=
5.85 cm
,
EF
=
11.7 cm
and
EG
=
13.3 cm
, find
EI
(i)
8.65 cm
(ii)
6.65 cm
(iii)
7.65 cm
(iv)
4.65 cm
(v)
5.65 cm
Question
9
9.
In the given figure, PQ ∥ EF and DQ = 13.2 cm, PQ = 12 cm and EF = 20 cm, find DF
(i)
23.0 cm
(ii)
21.0 cm
(iii)
22.0 cm
(iv)
20.0 cm
(v)
24.0 cm
Question
10
10.
In the given figure, △BCD is isosceles right-angled at C and CE ⟂ DB. ∠E =
(i)
∠B
(ii)
∠C
(iii)
∠G
(iv)
∠F
(v)
∠D
Question
11
11.
In the given figure, △GHI is isosceles right-angled at H and HJ ⟂ IG. ∠HJG =
(i)
∠JHI
(ii)
∠HIJ
(iii)
∠GHI
(iv)
∠GHJ
(v)
∠JGH
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.
△FDA ∼
(i)
△ABH
(ii)
△DAE
(iii)
△FEH
(iv)
△DCF
(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.
∠AFD =
(i)
∠FDA
(ii)
∠HFE
(iii)
∠FAC
(iv)
∠FEH
(v)
∠HAB
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.
∠CFA =
(i)
∠BHA
(ii)
∠EHF
(iii)
∠DAF
(iv)
∠HFE
(v)
∠AFD
Question
16
16.
In the given figure, MNOP is a trapezium in which
MN ∥ OP
and the diagonals
NP
and
MO
intersect at
Q
.
If
QM
=
(
2
x
+
28
)
cm,
NQ
=
(
2
x
+
19
)
cm,
QO
=
(
x
+
5
)
cm and
PQ
=
(
x
+
1
)
cm, find the value of x
(i)
(
67
,
66
)
(ii)
(
70
,
67
)
(iii)
(
68
,
68
)
(iv)
(
69
,
69
)
(v)
(
67
,
67
)
Question
17
17.
In the given figure, FGHI is a trapezium in which
FG ∥ HI
and the diagonals
GI
and
FH
intersect at
J
.
△JHI
∼
(i)
△JGH
(ii)
△JFG
(iii)
△JIF
(iv)
△GHI
(v)
△IFG
Question
18
18.
In the given figure, the altitudes PH and IQ of △GHI meet at O. △QHI ∼
(i)
△OHI
(ii)
△QHO
(iii)
△PIO
(iv)
△PIH
(v)
△OQP
Question
19
19.
In the given figure, the altitudes ND and EO of △CDE meet at M. ∠MEN =
(i)
∠ENM
(ii)
∠DMO
(iii)
∠ODM
(iv)
∠NME
(v)
∠MOD
Question
20
20.
In the given figure, RS ∥ HI , and median GJ bisects RS.
If GJ = 18.1 cm, GR = 9 cm and GK = 9.05 cm, GH =
(i)
19.00 cm
(ii)
20.00 cm
(iii)
16.00 cm
(iv)
17.00 cm
(v)
18.00 cm
Question
21
21.
In the given figure, RS ∥ JK , and median IL bisects RS.
If IL = 13.8 cm, IK = 17 cm and IM = 4.6 cm, IS =
(i)
3.67 cm
(ii)
5.67 cm
(iii)
6.67 cm
(iv)
7.67 cm
(v)
4.67 cm
Question
22
22.
In the given figure, RS ∥ IJ , and median HK bisects RS.
△HLS ∼
(i)
△HKJ
(ii)
△IJH
(iii)
△HIJ
(iv)
△HIK
(v)
△HRL
Question
23
23.
In the given figure, △BCD is a triangle in which BE is the internal bisector of ∠B and DF ∥ EB meeting CB produced at F . ∠BDF =
(i)
∠EDB
(ii)
∠FBD
(iii)
∠BED
(iv)
∠CEB
(v)
∠DFB
Question
24
24.
In the given figure, I and J are points on the sides FG and FH respectively of △FGH.For which of the following cases, IJ ∥ GH
a)
FI = 10 cm, IG = 8 cm, FJ = 10 cm and JH = 8 cm
b)
FG = 18 cm, IG = 8 cm, FJ = 12 cm and FH = 18 cm
c)
FG = 18 cm, FI = 12 cm, FH = 18 cm and JH = 8 cm
d)
FG = 18 cm, IG = 8 cm, FH = 18 cm and FJ = 10 cm
(i)
{a,d}
(ii)
{b,d,a}
(iii)
{b,c,a}
(iv)
{c,d}
(v)
{b,a}
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)
3
4
of area of △KLM
(ii)
1
2
of area of △KLM
(iii)
2
3
of area of △KLM
(iv)
1
3
of area of △KLM
(v)
1
4
of area of △KLM
Question
26
26.
In the given figure, the parallelogram HIJK and the triangle △LHI are on the same bases and between the same parallels.
The area of the
△LHI
is x sq.cm. The area of the parallelogram is
(i)
5
4
the area of the triangle
(ii)
twice
the area of the triangle
(iii)
3
2
the area of the triangle
(iv)
thrice
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 C : D and the ratio of the corresponding heights is E : F , the ratio of their areas in the same order is
(i)
EF : CD
(ii)
CD : EF
(iii)
CF : DE
(iv)
DE : CF
(v)
CE : DF
Question
28
28.
In the given △GHI, JK ∥ HI. If GJ : JH = 7.71 cm : 10.29 cm and GI = 18 cm, KI =
(i)
12.29 cm
(ii)
9.29 cm
(iii)
11.29 cm
(iv)
10.29 cm
(v)
8.29 cm
Question
29
29.
In the given two similar triangles, if d = 19 cm, e = 18 cm, f = 20 cm, h = 10.8 cm, find i
(i)
11.00 cm
(ii)
12.00 cm
(iii)
14.00 cm
(iv)
10.00 cm
(v)
13.00 cm
Question
30
30.
In the given figure, given ∠IFG = ∠HFI, x : y = 10.31 cm : 8.69 cm and p = 19 cm, find q =
(i)
16.00 cm
(ii)
18.00 cm
(iii)
17.00 cm
(iv)
15.00 cm
(v)
14.00 cm
Question
31
31.
In the given figure, given ∠DAB = ∠CAD, p = 10.81 cm, q = 9.19 cm and BC = 20 cm, find BD =
(i)
9.81 cm
(ii)
8.81 cm
(iii)
12.81 cm
(iv)
10.81 cm
(v)
11.81 cm
Question
32
32.
In the given figure, ABCD is a trapezium where OB = 13 cm , OC = 4 cm and OD = 4 cm . Find OA =
(i)
12 cm
(ii)
14 cm
(iii)
11 cm
(iv)
15 cm
(v)
13 cm
Question
33
33.
In the given figure, ∠IFG = 51.52°, find the value of x =
(i)
39.48°
(ii)
36.48°
(iii)
40.48°
(iv)
38.48°
(v)
37.48°
Question
34
34.
In the given figure, ∠GHI = 43.83°, find the value of y =
(i)
46.17°
(ii)
48.17°
(iii)
45.17°
(iv)
44.17°
(v)
47.17°
Question
35
35.
In the given figure, if IJ ∥ KL then
(i)
△IJM ∼ △LKM
(ii)
△IJM ∼ △MLK
(iii)
△MIJ ∼ △MKL
(iv)
△MJI ∼ △MLK
(v)
△IJM ∼ △MKL
Question
36
36.
In the given figure, △DEF is right-angled at E. Also, EG ⟂ DF. Which of the following are true?
a)
DE
2
=
DF
.
DG
b)
EF
2
=
FD
.
FG
c)
DE
2
=
FD
.
FG
d)
EG
2
=
DG
.
GF
e)
EF
2
=
DF
.
DG
(i)
{a,b,d}
(ii)
{c,a,b}
(iii)
{c,a}
(iv)
{c,e,d}
(v)
{e,b}
Question
37
37.
In the given figure, △GHI is right-angled at H. Also, HJ ⟂ GI. If GH = 15 cm, HI = 18 cm, then find HJ.
(i)
12.52 cm
(ii)
11.52 cm
(iii)
13.52 cm
(iv)
10.52 cm
(v)
9.52 cm
Question
38
38.
In the given figure, △BCD is right-angled at C. Also, CE ⟂ BD. If BE = 13 cm, ED = 14.6 cm, then find CE.
(i)
15.78 cm
(ii)
13.78 cm
(iii)
11.78 cm
(iv)
12.78 cm
(v)
14.78 cm
Question
39
39.
In the given figure, △DEF ∼ △MNO and DE = 13 cm, MN = 18.2 cm.
If the area of the
△MNO
=
104.75 sq.cm
, find the area of the
△DEF
(i)
53.44 sq.cm
(ii)
55.44 sq.cm
(iii)
52.44 sq.cm
(iv)
54.44 sq.cm
(v)
51.44 sq.cm
Question
40
40.
In the given figure, △ABC ∼ △OPQ and BC = 10 cm , PQ = 14 cm and
AD
=
12.48 cm
,
find the area of the
△OPQ
(i)
121.28 sq.cm
(ii)
122.28 sq.cm
(iii)
123.28 sq.cm
(iv)
120.28 sq.cm
(v)
124.28 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)
100
sq.cm
:
193
sq.cm
(ii)
100
sq.cm
:
198
sq.cm
(iii)
99
sq.cm
:
196
sq.cm
(iv)
101
sq.cm
:
196
sq.cm
(v)
100
sq.cm
:
196
sq.cm
Question
42
42.
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)
Area of trapezium MNPQ is thrice the area of △LQP
b)
Area of trapezium
MNPQ
is
1
4
the area of
△LMN
c)
All four small triangles have equal areas
d)
Area of △LMN = 4 times area of △OPQ
e)
Area of
△LMN
=
1
3
area of
△OPQ
(i)
{a,c,d}
(ii)
{b,a,c}
(iii)
{b,e,d}
(iv)
{b,a}
(v)
{e,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)
△IEG ∼ △DEF
b)
△HGF ∼ △DEF
c)
△GHI ∼ △DEF
d)
△DIH ∼ △DEF
e)
△GIH ∼ △DEF
(i)
{e,c}
(ii)
{e,d,a}
(iii)
{a,b,c,d}
(iv)
{e,b}
(v)
{e,a}
Question
44
44.
The perimeters of two similar triangles are 30 cm and 23 cm respectively. If one side of the first triangle is 16 cm, find the length of the corresponding side of the second triangle.
(i)
14.27 cm
(ii)
10.27 cm
(iii)
12.27 cm
(iv)
11.27 cm
(v)
13.27 cm
Question
45
45.
In the given figure, D is a point on side BC of △ABC such that ∠CAB = ∠ADC = 100° , ∠DCA = 22°. Find ∠CAD
(i)
57°
(ii)
56°
(iii)
60°
(iv)
58°
(v)
59°
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)
1
2
√
3
a sq.units
(iii)
√
3
a sq.units
(iv)
1
2
a sq.units
(v)
2a sq.units
Question
47
47.
ABCD is a cyclic trapezium. Diagonals BD and AC intersect at E. If DA = 16 cm, find BC
(i)
15 cm
(ii)
18 cm
(iii)
14 cm
(iv)
16 cm
(v)
17 cm
Question
48
48.
A vertical stick
11 m
long casts a shadow of
13 m
long on the ground.
At the same time, a tower casts the shadow
104 m
long on the ground.
Find the height of the tower.
(i)
88 m
(ii)
90 m
(iii)
87 m
(iv)
86 m
(v)
89 m
Question
49
49.
In the given figure, △GHI, PQ ∥ HI such that
area of
△GPQ
= area of
PQIH
. Find
GP
GH
(i)
1
2
√
2
(ii)
1
2
√
4
(iii)
1
2
√
1
2
(iv)
1
2
4
√
2
(v)
1
Question
50
50.
In the given figure, ∠FCD = ∠ECF and CF ∥ GE and CD = 20 cm, DF = 10 cm and FE = 9 cm. Find CG
(i)
20.00 cm
(ii)
17.00 cm
(iii)
18.00 cm
(iv)
19.00 cm
(v)
16.00 cm
Question
51
51.
In the given figure, IK is the angular bisector of
∠I
&
∠K
HI
=
20 cm
,
IJ
=
21 cm
and
JK
=
26 cm
.
Find
KH
(i)
22.76 cm
(ii)
23.76 cm
(iii)
25.76 cm
(iv)
26.76 cm
(v)
24.76 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 = OC . OD . OE
(ii)
CF . DG . EH = CD . DE . EC
(iii)
CF . DG . EH = FG . GH . HF
(iv)
CF . DG . EH = FD . GE . HC
(v)
CF . DG . EH = OF . OG . OH
Question
53
53.
In the given figure, if A, Q, R, S, T, U are equidistant and RP ∥ UB and AB = 24 cm and AP = 10 cm. Find PB
(i)
12.00 cm
(ii)
16.00 cm
(iii)
14.00 cm
(iv)
13.00 cm
(v)
15.00 cm
Question
54
54.
From the given figure and values, find x
(i)
(
33
,
-1
)
(ii)
(
1
,
35
)
(iii)
(
34
,
0
)
(iv)
(
35
,
-1
)
(v)
(
33
,
-2
)
Question
55
55.
If the measures are as shown in the given figure, find HI
(i)
22.0 cm
(ii)
21.0 cm
(iii)
25.0 cm
(iv)
24.0 cm
(v)
23.0 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)
11.22 cm
(ii)
13.22 cm
(iii)
10.22 cm
(iv)
14.22 cm
(v)
12.22 cm
Assignment Key
1) (i)
2) (iii)
3) (iv)
4) (i)
5) (ii)
6) (ii)
7) (iii)
8) (ii)
9) (iii)
10) (ii)
11) (iii)
12) (iii)
13) (ii)
14) (iii)
15) (i)
16) (v)
17) (ii)
18) (iv)
19) (iii)
20) (v)
21) (ii)
22) (i)
23) (v)
24) (i)
25) (v)
26) (ii)
27) (v)
28) (iv)
29) (ii)
30) (i)
31) (iv)
32) (v)
33) (iv)
34) (i)
35) (i)
36) (i)
37) (ii)
38) (ii)
39) (i)
40) (ii)
41) (v)
42) (i)
43) (iii)
44) (iii)
45) (iv)
46) (v)
47) (iv)
48) (i)
49) (i)
50) (iii)
51) (v)
52) (iv)
53) (iii)
54) (i)
55) (v)
56) (v)