MCQ Questions for Class 9 Maths Chapter 11 Constructions with Answers
MCQs from Class 9 Maths Chapter 11 – Constructions are provided here to help students prepare for their upcoming Maths exam.
MCQs from CBSE Class 9 Maths Chapter 11: Constructions
1) Which of the following angles can be constructed using ruler and compass?
a. 35
b. 40
c. 90
d. 50
Answer/ Explanation
Answer: (c)
Explanation: See the figure below:
∠POA = 90
2) Which of the following angles can be constructed using ruler and compasses?
a. 35
b. 45
c. 95
d. 55
Answer/ Explanation
Answer: (b)
Explanation: See the figure below:
ROA = 45
3) Which of these angles we cannot construct it using ruler and compasses?
a. 120
b. 70
c. 60
d. All can be constructed
Answer/ Explanation
Answer: (b)
4) Which of these angles cannot be constructed using ruler and compasses?
a. 120
b. 60
c. 140
d. 135
Answer/ Explanation
Answer: (c)
5) If a, b and c are the lengths of three sides of a triangle, then:
a. a+b>c
b. a-b>c
c. a+b=c
d. a-b=c
Answer/ Explanation
Answer: (a)
Explanation: The sum of two sides of a triangle is always greater than the third side.
6) Which of the following set of lengths can be the sides of a triangle?
a. 2 cm, 4 cm, 1.9 cm
b. 1.6 cm, 3.7 cm. 5.3 cm
c. 5.5 cm, 6.5 cm, 8.9 cm
d. None of the above
Answer/ Explanation
Answer: (c)
7) The side lengths 4cm, 4cm and 4cm can be sides of:
a. Scalene Triangle
b. Isosceles Triangle
c. Equilateral Triangle
d. None of the above
Answer/ Explanation
Answer: (c)
Explanation: Equilateral triangle has all its three sides equal.
8) To construct a bisector of a given angle, we need:
a. A ruler
b. A compass
c. A protractor
d. Both ruler and compass
Answer/ Explanation
Answer: (d)
9) To construct an angle of 60 degrees, we need to draw first:
a. A ray
b. An arc
c. Two rays
d. A straight line
Answer/ Explanation
Answer: (a)
Explanation: To construct an angle of 60 degrees we need to start at the initial point of a ray.
10) If we want to construct a triangle, given its perimeter, then we need to know:
a. Sum of two sides of triangle
b. Difference between two sides of triangle
c. One base angles
d. Two base angles
Answer/ Explanation
Answer: (d)