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Grade 9 : Lines and Angles , Triangles

Total questions: 10

Worksheet time: 9mins

Name
Class
Date
1.

In the given below figure, BO and CO are the bisectors of ∠B and ∠C respectively. If ∠A = 65⁰ then ∠BOC = ?

a)

54.8⁰

b)

115⁰

c)

122.5⁰

d)

65⁰

2.
a)

65°

b)

40°

c)

115°

d)

35°

3.

Find the value of ∠CEF if AB is parallel to CD.

a)

35°

b)

65°

c)

80°

d)

55°

4.
a)

126°

b)

162°

c)

63°

d)

108°

5.

In a ∆ABC, if 3∠A = 4∠B = 6∠C then A: B : C = ?

a)

1 : 2 : 3

b)

4 :3 :2

c)

6 : 4: 3

d)

2 : 3 : 4

6.

Find the value of y in the given figure.

a)

124°

b)

48°

c)

24°

d)

96°

7.

If AD is an altitude of an isosceles triangle ABC in which AB = AC. Then:

a)

BD > CD

b)

BD = CD

c)

BD < CD

d)

none of these

8.

It is given that ∆ ABC ≅ ∆ FDE and AB = 5 cm, ∠B = 40° and ∠A = 80°. Then which of the following is true?

a)

DF = 4 cm, ∠F = 60°

b)

DF = 5 cm, ∠E = 60°

c)

DE = 5 cm, ∠E = 60°

d)

DE = 4 cm, ∠E = 60°

9.

In the given figure, PS is the median then ∠QPS?

a)

100°

b)

60°

c)

40°

d)

50°

10.

In two triangles DEF and PQR, if DE = QR, EF = PR and FD = PQ, then

a)

∆DEF ≅ ∆PQR

b)

∆EDF ≅ ∆RPQ

c)

∆FED ≅ ∆PRQ

d)

∆PQR ≅ ∆EFD