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)