 # Class 9 Maths Chapter 11 Constructions MCQs

Class 9 Maths Chapter 11 (Constructions) MCQs are provided online here, with solved answers. The questions (chapter-wise) are prepared, as per the CBSE syllabus (2020-2021) and NCERT curriculum. The objective questions are provided with detailed explanations. Also, check Important Questions for Class 9 Maths.

## MCQs on Class 9 Constructions

Solve the MCQs for constructions with each question provided with four options and select the right option.

1) Which of the following angles can be constructed using ruler and compass?

a. 35

b. 40

c. 90

d. 50

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

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

4) Which of these angles cannot be constructed using ruler and compasses?

a. 120

b. 60

c. 140

d. 135

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

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

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

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

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

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