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°