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)
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)
AAA Similarity
(ii)
not similar
(iii)
SAS Similarity
(iv)
SSS Similarity
Question
4
4.
In the given figure, △DEF and △RST are such that
∠E
=
∠S
and
DE
RS
=
EF
ST
.
Identify the property by which the two triangles are similar
(i)
not similar
(ii)
SSS Similarity
(iii)
SAS Similarity
(iv)
AAA Similarity
Question
5
5.
In the given figure, △HIJ and △QRS are such that
∠I
=
∠R
and
∠J
=
∠S
.
Identify the property by which the two triangles are similar
(i)
SSS Similarity
(ii)
AAA Similarity
(iii)
not similar
(iv)
SAS Similarity
Question
6
6.
In the given figure, △FGH and △QRS are such that
FG
QR
=
GH
RS
=
HF
SQ
.
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,
QR
∥
OP
.
If
NQ
QO
=
2
1
and
NP
=
11.4 cm
, find
NR
(i)
7.60 cm
(ii)
5.60 cm
(iii)
6.60 cm
(iv)
9.60 cm
(v)
8.60 cm
Question
8
8.
In the given figure,
DE
∥
BC
.
If
AD
=
7.68 cm
,
AB
=
12.8 cm
and
AC
=
11.4 cm
, find
AE
(i)
5.84 cm
(ii)
7.84 cm
(iii)
6.84 cm
(iv)
8.84 cm
(v)
4.84 cm
Question
9
9.
In the given figure, PQ ∥ EF and DF = 20 cm, PQ = 12.6 cm and EF = 21 cm, find DQ
(i)
11.0 cm
(ii)
12.0 cm
(iii)
14.0 cm
(iv)
10.0 cm
(v)
13.0 cm
Question
10
10.
In the given figure, △OPQ is isosceles right-angled at P and PR ⟂ QO. ∠R =
(i)
∠S
(ii)
∠O
(iii)
∠T
(iv)
∠P
(v)
∠Q
Question
11
11.
In the given figure, △CDE is isosceles right-angled at D and DF ⟂ EC. ∠DEF ≠
(i)
∠FCD
(ii)
∠ECD
(iii)
∠CDF
(iv)
∠DFC
(v)
∠FDE
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.
△ABH ∼
(i)
△DAE
(ii)
△FDA
(iii)
△ACF
(iv)
△DCF
(v)
△FEH
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)
∠HFE
(ii)
∠FDA
(iii)
∠FEH
(iv)
∠AFD
(v)
∠FAC
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)
∠FDA
(ii)
∠EHF
(iii)
∠FEH
(iv)
∠DAF
(v)
∠ACF
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)
∠EHF
(ii)
∠AFD
(iii)
∠HFE
(iv)
∠BHA
(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
+
3
)
cm,
LO
=
(
2
x
+
15
)
cm,
OM
=
(
x
+
8
)
cm and
NO
=
(
x
+
16
)
cm, find the value of x
(i)
(
20
,
18
)
(ii)
(
20
,
20
)
(iii)
(
18
,
18
)
(iv)
(
19
,
19
)
(v)
(
18
,
17
)
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)
△GHI
(ii)
△JGH
(iii)
△IFG
(iv)
△JFG
(v)
△JIF
Question
18
18.
In the given figure, the altitudes SI and JT of △HIJ meet at R. △TIJ ∼
(i)
△SJR
(ii)
△TIR
(iii)
△SJI
(iv)
△RIJ
(v)
△RTS
Question
19
19.
In the given figure, the altitudes UE and FV of △DEF meet at T. ∠FTE =
(i)
∠EFT
(ii)
∠TEF
(iii)
∠TUV
(iv)
∠UVT
(v)
∠VTU
Question
20
20.
In the given figure, RS ∥ HI , and median GJ bisects RS.
If GJ = 16.9 cm, GR = 8.5 cm and GK = 8.45 cm, GH =
(i)
16.00 cm
(ii)
19.00 cm
(iii)
17.00 cm
(iv)
18.00 cm
(v)
15.00 cm
Question
21
21.
In the given figure, PQ ∥ IJ , and median HK bisects PQ.
If HK = 13.8 cm, HJ = 16 cm and HL = 9.2 cm, LK =
(i)
3.60 cm
(ii)
4.60 cm
(iii)
5.60 cm
(iv)
2.60 cm
(v)
6.60 cm
Question
22
22.
In the given figure, ST ∥ IJ , and median HK bisects ST.
△HLT ∼
(i)
△HIJ
(ii)
△HIK
(iii)
△IJH
(iv)
△HSL
(v)
△HKJ
Question
23
23.
In the given figure, △GHI is a triangle in which GJ is the internal bisector of ∠G and IK ∥ JG meeting HG produced at K . ∠JGH =
(i)
∠GJI
(ii)
∠KGI
(iii)
∠JIG
(iv)
∠IKG
(v)
∠HJG
Question
24
24.
In the given figure, F and G are points on the sides CD and CE respectively of △CDE.For which of the following cases, FG ∥ DE
a)
CF = 8.5 cm, FD = 8.5 cm, CG = 8 cm and GE = 8 cm
b)
CD = 17 cm, FD = 8.5 cm, CG = 10 cm and CE = 16 cm
c)
CD = 17 cm, FD = 8.5 cm, CE = 16 cm and CG = 8 cm
d)
CD = 17 cm, CF = 10.5 cm, CE = 16 cm and GE = 8 cm
(i)
{a,c}
(ii)
{b,a}
(iii)
{d,c}
(iv)
{b,c,a}
(v)
{b,d,a}
Question
25
25.
In the given figure, the area of the △GHI is x sq.cm. J,K,L are the mid-points of the sides HI , IG and GH respectively. The area of the △JKL is
(i)
1
2
of area of △GHI
(ii)
3
4
of area of △GHI
(iii)
1
4
of area of △GHI
(iv)
1
3
of area of △GHI
(v)
2
3
of area of △GHI
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)
3
2
the area of the triangle
(ii)
4
3
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 H : I and the ratio of the corresponding heights is J : K , the ratio of their areas in the same order is
(i)
IJ : HK
(ii)
HJ : IK
(iii)
JK : HI
(iv)
HI : JK
(v)
HK : IJ
Question
28
28.
In the given △FGH, IJ ∥ GH. If FI : IG = 8.5 cm : 8.5 cm and FH = 16 cm, FJ =
(i)
9.00 cm
(ii)
8.00 cm
(iii)
7.00 cm
(iv)
6.00 cm
(v)
10.00 cm
Question
29
29.
In the given two similar triangles, if c = 15 cm, d = 16 cm, e = 17 cm, h = 10.2 cm, find f
(i)
8.00 cm
(ii)
9.00 cm
(iii)
7.00 cm
(iv)
11.00 cm
(v)
10.00 cm
Question
30
30.
In the given figure, given ∠JGH = ∠IGJ, x : y = 8.26 cm : 7.74 cm and q = 15 cm, find p =
(i)
18.00 cm
(ii)
17.00 cm
(iii)
14.00 cm
(iv)
15.00 cm
(v)
16.00 cm
Question
31
31.
In the given figure, given ∠EBC = ∠DBE, p = 7.29 cm, q = 7.71 cm and CD = 15 cm, find CE =
(i)
7.29 cm
(ii)
5.29 cm
(iii)
9.29 cm
(iv)
6.29 cm
(v)
8.29 cm
Question
32
32.
In the given figure, DEFG is a trapezium where OD = 13 cm , OE = 13 cm and OF = 4 cm . Find OG =
(i)
2 cm
(ii)
6 cm
(iii)
5 cm
(iv)
3 cm
(v)
4 cm
Question
33
33.
In the given figure, ∠EBC = 42.93°, find the value of x =
(i)
47.07°
(ii)
45.07°
(iii)
48.07°
(iv)
46.07°
(v)
49.07°
Question
34
34.
In the given figure, ∠BCD = 41.7°, find the value of y =
(i)
49.30°
(ii)
50.30°
(iii)
48.30°
(iv)
46.30°
(v)
47.30°
Question
35
35.
In the given figure, if EF ∥ GH then
(i)
△IEF ∼ △IGH
(ii)
△IFE ∼ △IHG
(iii)
△EFI ∼ △HGI
(iv)
△EFI ∼ △IGH
(v)
△EFI ∼ △IHG
Question
36
36.
In the given figure, △EFG is right-angled at F. Also, FH ⟂ EG. Which of the following are true?
a)
EF
2
=
GE
.
GH
b)
FG
2
=
EG
.
EH
c)
FH
2
=
EH
.
HG
d)
EF
2
=
EG
.
EH
e)
FG
2
=
GE
.
GH
(i)
{a,c,d}
(ii)
{a,b,e}
(iii)
{a,c}
(iv)
{b,d}
(v)
{c,d,e}
Question
37
37.
In the given figure, △CDE is right-angled at D. Also, DF ⟂ CE. If DE = 19 cm, DF = 11.77 cm, then find CD.
(i)
17.00 cm
(ii)
15.00 cm
(iii)
14.00 cm
(iv)
16.00 cm
(v)
13.00 cm
Question
38
38.
In the given figure, △FGH is right-angled at G. Also, GI ⟂ FH. If FI = 11 cm, IH = 12.3 cm, then find GI.
(i)
9.63 cm
(ii)
10.63 cm
(iii)
13.63 cm
(iv)
11.63 cm
(v)
12.63 cm
Question
39
39.
In the given figure, △ABC ∼ △NOP and AB = 11 cm, NO = 15.4 cm.
If the area of the
△ABC
=
54.64 sq.cm
, find the area of the
△NOP
(i)
105.10 sq.cm
(ii)
109.10 sq.cm
(iii)
106.10 sq.cm
(iv)
108.10 sq.cm
(v)
107.10 sq.cm
Question
40
40.
In the given figure, △DEF ∼ △NOP and EF = 15 cm , OP = 21 cm and
DG
=
12.38 cm
,
find the area of the
△NOP
(i)
183.02 sq.cm
(ii)
181.02 sq.cm
(iii)
182.02 sq.cm
(iv)
184.02 sq.cm
(v)
180.02 sq.cm
Question
41
41.
In the given figure, △CDE & △PQR are similar triangles. If the ratio of the heights CF : PS = 10 : 14, then the ratio of their areas is
(i)
100
sq.cm
:
198
sq.cm
(ii)
100
sq.cm
:
194
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 F , G and H are the mid-points of sides DE, EC and CD of △CDE. Which of the following are true?
a)
All four small triangles have equal areas
b)
Area of △CDE = 4 times area of △FGH
c)
Area of trapezium
DEGH
is
1
4
the area of
△CDE
d)
Area of trapezium DEGH is thrice the area of △CHG
e)
Area of
△CDE
=
1
3
area of
△FGH
(i)
{c,a,b}
(ii)
{a,b,d}
(iii)
{c,e,d}
(iv)
{c,a}
(v)
{e,b}
Question
43
43.
In the given figure, points D , E and F are the mid-points of sides BC, CA and AB of △ABC. Which of the following are true?
a)
△DFE ∼ △ABC
b)
△EDC ∼ △ABC
c)
△AFE ∼ △ABC
d)
△DEF ∼ △ABC
e)
△FBD ∼ △ABC
(i)
{a,e,b}
(ii)
{a,b}
(iii)
{a,d}
(iv)
{a,c}
(v)
{b,c,d,e}
Question
44
44.
The perimeters of two similar triangles are 33 cm and 22 cm respectively. If one side of the first triangle is 15 cm, find the length of the corresponding side of the second triangle.
(i)
10.00 cm
(ii)
8.00 cm
(iii)
9.00 cm
(iv)
12.00 cm
(v)
11.00 cm
Question
45
45.
In the given figure, D is a point on side BC of △ABC such that ∠CAB = ∠ADC = 101° , ∠DCA = 26°. Find ∠CAD
(i)
52°
(ii)
55°
(iii)
53°
(iv)
51°
(v)
54°
Question
46
46.
MNOP is a square and △MNQ is an equilateral triangle. Also, △MOR is an equilateral triangle. If area of △MNQ is 'a' sq.units, then the area of △MOR is
(i)
1
2
√
3
a sq.units
(ii)
1
2
a sq.units
(iii)
√
3
a sq.units
(iv)
2a sq.units
(v)
a
2
sq.units
Question
47
47.
JKLM is a cyclic trapezium. Diagonals KM and JL intersect at N. If MJ = 15 cm, find KL
(i)
13 cm
(ii)
14 cm
(iii)
17 cm
(iv)
15 cm
(v)
16 cm
Question
48
48.
A vertical stick
13 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)
104 m
(ii)
106 m
(iii)
102 m
(iv)
103 m
(v)
105 m
Question
49
49.
In the given figure, △CDE, RS ∥ DE such that
area of
△CRS
= area of
RSED
. Find
CR
CD
(i)
1
2
4
√
2
(ii)
1
2
√
-1
(iii)
1
2
√
2
(iv)
1
(v)
1
2
√
5
Question
50
50.
In the given figure, ∠DAB = ∠CAD and AD ∥ EC and AB = 18 cm, BD = 8 cm and DC = 9 cm. Find AE
(i)
21.25 cm
(ii)
18.25 cm
(iii)
19.25 cm
(iv)
20.25 cm
(v)
22.25 cm
Question
51
51.
In the given figure, GI is the angular bisector of
∠G
&
∠I
FG
=
20 cm
,
GH
=
20 cm
and
HI
=
21 cm
.
Find
IF
(i)
22.00 cm
(ii)
20.00 cm
(iii)
19.00 cm
(iv)
23.00 cm
(v)
21.00 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 = DE . EF . FD
(ii)
AD . BE . CF = AB . BC . CA
(iii)
AD . BE . CF = OA . OB . OC
(iv)
AD . BE . CF = OD . OE . OF
(v)
AD . BE . CF = DB . EC . FA
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)
12.80 cm
(ii)
8.80 cm
(iii)
11.80 cm
(iv)
9.80 cm
(v)
10.80 cm
Question
54
54.
From the given figure and values, find x
(i)
(
0
,
16
)
(ii)
(
3
,
17
)
(iii)
(
0
,
17
)
(iv)
(
1
,
18
)
(v)
(
19
,
2
)
Question
55
55.
If the measures are as shown in the given figure, find FG
(i)
23.0 cm
(ii)
21.0 cm
(iii)
22.0 cm
(iv)
20.0 cm
(v)
24.0 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)
14.64 cm
(ii)
13.64 cm
(iii)
12.64 cm
(iv)
16.64 cm
(v)
15.64 cm
Assignment Key
1) (ii)
2) (i)
3) (iv)
4) (iii)
5) (ii)
6) (iv)
7) (i)
8) (iii)
9) (ii)
10) (iv)
11) (iv)
12) (iii)
13) (v)
14) (v)
15) (iv)
16) (iii)
17) (iv)
18) (iii)
19) (v)
20) (iii)
21) (ii)
22) (v)
23) (iv)
24) (i)
25) (iii)
26) (iii)
27) (ii)
28) (ii)
29) (ii)
30) (v)
31) (i)
32) (v)
33) (i)
34) (iii)
35) (iii)
36) (v)
37) (ii)
38) (iv)
39) (v)
40) (iii)
41) (v)
42) (ii)
43) (v)
44) (i)
45) (iii)
46) (iv)
47) (iv)
48) (i)
49) (iii)
50) (iv)
51) (v)
52) (v)
53) (v)
54) (iii)
55) (iii)
56) (i)