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Class VI
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Class VIII
Class IX
Class X
ICSE Grade IX - Triangles
Question
1
1.
The side opposite to the vertex
M
LP
OM
NL
LM
MN
Question
2
2.
Which of the following are measures of a scalene triangle ?
∠L = 64.78° , ∠M = 57.61° , ∠N = 57.61°
∠L = 48.74° , ∠M = 69.98° , ∠N = 61.28°
∠L = 45° , ∠M = 90° , ∠N = 45°
∠L = 65.16° , ∠M = 57.42° , ∠N = 57.42°
∠L = 60° , ∠M = 60° , ∠N = 60°
Question
3
3.
Find the unknown marked angle in the following figure
x
=
55.23°
x
=
59.23°
x
=
57.23°
x
=
56.23°
x
=
58.23°
Question
4
4.
In the given figure, △GHI in which ∠H = 56.18° and ∠I = 50.31°. GJ and HI bisects each other. Find the value of z
z
=
72.51°
z
=
75.51°
z
=
73.51°
z
=
74.51°
z
=
71.51°
Question
5
5.
In the given figure, calculate the value of x.
x
=
22°
x
=
24°
x
=
23°
x
=
26°
x
=
25°
Question
6
6.
Which of the following are measures of an equilateral triangle ?
∠A = 71.38° , ∠B = 54.31° , ∠C = 54.31°
∠A = 60° , ∠B = 60° , ∠C = 60°
∠A = 58.67° , ∠B = 41.08° , ∠C = 80.25°
∠A = 45° , ∠B = 90° , ∠C = 45°
∠A = 38.16° , ∠B = 90° , ∠C = 51.84°
Question
7
7.
Which of the following are measures of an isosceles right angled triangle ?
CD = 13 cm , DE = 10 cm , EC = 11 cm
CD = 13 cm , DE = 13 cm , EC = 13 cm
CD = 13 cm , DE = 13 cm , EC = 18.38 cm
CD = 14 cm , DE = 19 cm , EC = 11 cm
CD = 14 cm , DE = 10 cm , EC = 12 cm
Question
8
8.
With the data in the figure, △HKI ≅ △IJH by which property?
SSS Congruency
RHS Congruency
not congruent
ASA Congruency
SAS Congruency
Question
9
9.
The vertex opposite to the side
CD
E
D
EF
C
Question
10
10.
In the given figure, find ∠CDB
68°
67°
65°
69°
66°
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