Punjab State Board PSEB 9th Class Maths Book Solutions Chapter 6 Lines and Angles MCQ Questions with Answers.

## PSEB 9th Class Maths Chapter 6 Lines and Angles MCQ Questions

Multiple Choice Questions and Answer

Answer each question by selecting the proper alternative from those given below each question to make the statement true:

Question 1.

The measure of the complementary angle of an angle with measure 40° is ………………….. .

A. 40°

B. 20°

C. 140°

D. 50°

Answer:

D. 50°

Question 2.

The measure of the supplementary angle of an angle with measure 70° is ………………… .

A. 20°

B. 35°

C. 70°

D. 110°

Answer:

D. 110°

Question 3.

∠ ABC and ∠ ABD form a linear pair. If ∠ ABC = 30°, then ∠ ABD = ………………. .

A. 30°

B. 60°

C. 150°

D. 15°

Answer:

C. 150°

Question 4.

∠P and ∠Q are supplementary angles such that ∠P = 2x – 5 and ∠Q = 3x + 10. Then ∠Q = …………….. .

A. 35°

B. 65°

C. 105°

D. 115°

Answer:

D. 115°

Question 5.

The measure of an angle is four times the measure of its complementary angle. Then, the measure of that angle is ………………… .

A. 18°

B. 72°

C. 40°

D. 10°

Answer:

B. 72°

Question 6.

The measures of two supplementary angles differ by 20°. Then, the measure of the acute angle among them is …………….. .

A. 50°

B. 80°

C. 100°

D. 20°

Answer:

B. 80°

Question 7.

The measure of an angle is twice the measure of its supplementary angle. Then, the measure of that angle is ………………. .

A. 60°

B. 120°

C. 50°

D. 100°

Answer:

B. 120°

Question 8.

∠ ACD is an exterior angle of ∆ ABC. If ∠ ACD = 110° and ∠ A = 60°, then ∠ B = ………………….. .

A. 50°

B. 60°

C. 70°

D. 55°

Answer:

A. 50°

Question 9.

In ∆ ABC, ∠ A = 70° and ∠ B = 60°. Then, the measure of an exterior angle of ∆ ABC can be ……………….. .

A. 50°

B. 110°

C. 100°

D. 70°

Answer:

B. 110°

Question 10.

In ∆ ABC, ∠ B = 55° and ∠ C = 65°. Then the measure of an exterior angle of ∆ ABC cannot be ………………. .

A. 125°

B. 120°

C. 115°

D. 110°

Answer:

D. 110°