EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Similar Triangles
Grade : SSC Grade X
License : Non Commercial Use
Question
1
1.
ABCD is a cyclic trapezium. Diagonals BD and AC intersect at E. If DA = 16 cm, find BC
(i)
14 cm
(ii)
15 cm
(iii)
16 cm
(iv)
18 cm
(v)
17 cm
Question
2
2.
In the given figure, PQ ∥ GH , and median FI bisects PQ.
If FG = 15 cm, FI = 15 cm and FP = 6.67 cm, JI =
(i)
9.33 cm
(ii)
8.33 cm
(iii)
10.33 cm
(iv)
7.33 cm
(v)
6.33 cm
Question
3
3.
In the given figure,
△EGF
is right-angled at
G
.
P
is the mid-point of
EG
and
Q
is the mid-point of
FG
.
Which of the following cases are true?
a)
4
FP
2
=
4
EG
2
+
FG
2
b)
4 (
EQ
2
+
FP
2
) =
5
EF
2
c)
4
EQ
2
=
4
FG
2
+
EG
2
d)
4
EQ
2
=
4
EG
2
+
FG
2
e)
4
FP
2
=
4
FG
2
+
EG
2
(i)
{c,d}
(ii)
{a,c,e}
(iii)
{a,b,d}
(iv)
{b,d,e}
(v)
{a,b}
Question
4
4.
In the given figure, △DEF is a triangle with DG being the median of EF. Then
(i)
DE
2
+
DF
2
=
2
EG
2
+
2
DG
2
(ii)
DE
2
+
DF
2
=
2
EG
2
+
2
GF
2
(iii)
DE
2
+
DF
2
=
DG
2
(iv)
DE
2
+
DF
2
=
EF
2
(v)
DE
2
+
DF
2
=
2
GF
2
+
2
DG
2
Question
5
5.
Which of the following are necessary conditions for similarity of two polygons ?
a)
The corresponding sides are proportional.
b)
The corresponding angles are equal.
c)
The corresponding sides are equal.
d)
The corresponding angles are proportional.
(i)
{d,b}
(ii)
{a,b}
(iii)
{c,b,a}
(iv)
{c,a}
(v)
{c,d,a}
Question
6
6.
Identify the property by which the two given triangles are similar
(i)
SAS Similarity
(ii)
not similar
(iii)
SSS Similarity
(iv)
AAA Similarity
Question
7
7.
In the given figure, △DEF and △QRS are such that
DE
QR
=
EF
RS
=
FD
SQ
.
Identify the property by which the two triangles are similar
(i)
not similar
(ii)
SSS Similarity
(iii)
SAS Similarity
(iv)
AAA Similarity
Question
8
8.
Which of the following are true?
a)
Congruent figures have same area.
b)
Similar and congruent are not synonymous.
c)
If two figures are congruent, then they are similar too.
d)
Similar figures have same area.
e)
If two figures are similar, then they are congruent too.
(i)
{d,a,b}
(ii)
{d,e,c}
(iii)
{d,a}
(iv)
{e,b}
(v)
{a,b,c}
Question
9
9.
Two poles of heights 7 m and 14 m stand vertically on a plane ground. If the distance between their feet is 10 m, find the distance between their tops
(i)
10.21 m
(ii)
13.21 m
(iii)
14.21 m
(iv)
11.21 m
(v)
12.21 m
Question
10
10.
In the given figure,
QR
∥
OP
.
If
NQ
QO
=
1
1
and
NP
=
11.9 cm
, find
NR
(i)
7.95 cm
(ii)
6.95 cm
(iii)
4.95 cm
(iv)
3.95 cm
(v)
5.95 cm
Question
11
11.
In the given figure, △JKL is isosceles right-angled at K and KM ⟂ LJ. ∠JKM ≠
(i)
∠LJK
(ii)
∠MJK
(iii)
∠MKL
(iv)
∠KLM
(v)
∠JKL
Question
12
12.
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)
Area of △JKL = 4 times area of △MNO
b)
Area of
△JKL
=
1
3
area of
△MNO
c)
Area of trapezium
KLNO
is
1
4
the area of
△JKL
d)
Area of trapezium KLNO is thrice the area of △JON
e)
All four small triangles have equal areas
(i)
{b,a}
(ii)
{c,d}
(iii)
{b,a,d}
(iv)
{b,c,e}
(v)
{a,d,e}
Question
13
13.
In the given figure, △BCD is isosceles with BC = BD and CE ⟂ BD. Then
(i)
CE
2
+
BE
2
= 2
DE
.
BE
(ii)
CE
2
−
DE
2
= 2
DE
.
BE
(iii)
CE
2
−
BE
2
= 2
DE
.
BE
(iv)
CE
2
+
DE
2
= 2
DE
.
BE
Question
14
14.
In the given figure, △PQR is isosceles right-angled at Q and QS ⟂ RP. ∠S =
(i)
∠P
(ii)
∠T
(iii)
∠Q
(iv)
∠U
(v)
∠R
Question
15
15.
In the given figure, CDEF is a rhombus. Which of the following are true?
a)
2
CD
2
=
CE
2
+
DF
2
b)
CD
2
+
DE
2
+
EF
2
+
CF
2
=
CE
2
+
DF
2
c)
CD
2
+
DE
2
=
CE
2
d)
DE
2
+
EF
2
=
DF
2
e)
4
CD
2
=
CE
2
+
DF
2
(i)
{c,e,b}
(ii)
{b,e}
(iii)
{d,a,b}
(iv)
{a,b}
(v)
{c,e}
Question
16
16.
In the given figure, △CDE is an obtuse angled triangle and CF ⟂ DE. Then
(i)
CE
2
=
CD
2
+
DE
2
+
2
CD
.
DE
(ii)
CE
2
=
CD
2
+
DE
2
+
2
DE
.
DF
(iii)
CE
2
=
CD
2
+
DE
2
−
2
DE
.
DF
(iv)
CE
2
=
CD
2
+
DE
2
+
2
DF
.
EF
(v)
CE
2
=
CD
2
+
DE
2
+
DF
2
Question
17
17.
In the given figure, △CDE, CF ⟂ DE. Which of the following are true?
a)
CD
2
+
DF
2
=
CE
2
+
EF
2
b)
CD
2
−
CE
2
=
DF
2
−
EF
2
c)
CD
2
+
CE
2
=
DF
2
+
EF
2
d)
CD
2
−
DF
2
=
CE
2
−
EF
2
e)
CF
2
=
2
DF
.
EF
(i)
{c,d,b}
(ii)
{e,a,b}
(iii)
{c,d}
(iv)
{b,d}
(v)
{a,b}
Question
18
18.
The foot of a ladder resting on a wall from the foot of the wall is 10 m. If the height of the top of the ladder from ground is 13 m, find the length of the ladder
(i)
18.40 m
(ii)
15.40 m
(iii)
16.40 m
(iv)
17.40 m
(v)
14.40 m
Question
19
19.
In the given figure, △HIJ is a triangle in which HI = HJ and K is a point on IJ. Then
(i)
HI
2
+
HK
2
=
IJ
2
(ii)
HI
2
−
HK
2
=
HK
.
JK
(iii)
HI
2
+
HK
2
=
IK
.
JK
(iv)
HI
2
−
HK
2
=
HK
.
IK
(v)
HI
2
−
HK
2
=
IK
.
JK
Question
20
20.
The ratio of the bases of two triangles ABC and DEF is
10
:
4
.
If the triangles are equal in area, then the ratio of their heights is
(i)
4
:
10
(ii)
11
:
4
(iii)
10
:
7
(iv)
10
:
1
(v)
9
:
4
Question
21
21.
In the given figure, given ∠EBC = ∠DBE, x : y = 8.44 cm : 9.56 cm and q = 17 cm, find p =
(i)
14.00 cm
(ii)
13.00 cm
(iii)
17.00 cm
(iv)
15.00 cm
(v)
16.00 cm
Question
22
22.
In the given figure, TU ∥ BC and AT = 15 cm, TU = 13.8 cm and BC = 23 cm, find AB
(i)
25.0 cm
(ii)
23.0 cm
(iii)
24.0 cm
(iv)
26.0 cm
(v)
27.0 cm
Question
23
23.
In the given figure, △ACB is right-angled at C, CD ⟂ AB.
AB
= c,
CB
= a,
AC
= b and
CD
= p.
Which of the following are true?
a)
1
a
2
+
1
b
2
+
1
c
2
=
1
p
2
b)
ab
=
pc
c)
1
a
2
+
1
b
2
=
1
c
2
+
1
p
2
d)
1
a
2
+
1
b
2
=
1
p
2
e)
a
2
+
b
2
=
c
2
(i)
{c,d}
(ii)
{b,d,e}
(iii)
{a,b}
(iv)
{a,c,e}
(v)
{a,b,d}
Question
24
24.
If the measures are as shown in the given figure, find EF
(i)
24.0 cm
(ii)
27.0 cm
(iii)
25.0 cm
(iv)
26.0 cm
(v)
23.0 cm
Question
25
25.
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 = 23 cm
and radius of the inner circle is
6.1 cm
.
Find the radius of the outer circle.
(i)
13.03 cm
(ii)
15.03 cm
(iii)
16.03 cm
(iv)
14.03 cm
(v)
12.03 cm
Assignment Key
1) (iii)
2) (ii)
3) (iv)
4) (i)
5) (ii)
6) (iv)
7) (ii)
8) (v)
9) (v)
10) (v)
11) (v)
12) (v)
13) (ii)
14) (iii)
15) (ii)
16) (ii)
17) (iv)
18) (iii)
19) (v)
20) (i)
21) (iv)
22) (i)
23) (ii)
24) (iii)
25) (iv)