## CBSE Class 9 Constructions MCQ By Clarify Knowledge

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## CBSE Class 9 Constructions MCQ Table

Question 1.

If a, b and c are the lengths of the three sides of a triangle, then which of the following is true?

(a) a + b < c

(b) a – b < c

(c) a + b = cAnswer

Question 2.

With the help of a ruler and compasses, which of the following is not possible to construct?

(a) 70°

(b) 60°

(c) 135°Answer

Question 3.

Which of the following sets of angles can be the angles of a triangle?

(a) 30°, 60°, 80°

(b) 40°, 60°, 70°

(c) 50°, 30°, 100°Answer

Question 4.

The construction of the triangle ABC is possible if it is given that BC = 4 cm, ∠C = 60° and the difference of AB and AC is

(a) 3.5 cm

(b) 4.5 cm

(c) 3 cm

(d) 2.5 cmAnswer

Question 5.

Which of the following can be the length of BC required to construct the triangle ABC such that AC = 7.4 cm and AB = 5 cm?

(a) 3.5 cm

(b) 2.1 cm

(c) 4.7 cmAnswer

Question 6.

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 anglesAnswer

Question 7.

To construct a bisector of a given angle, we need:

(a) A ruler

(b) A compass

(c) A protractor

(d) Both ruler and compassAnswer

Question 8.

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 aboveAnswer

Question 9.

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

(a) 120

(b) 60

(c) 140

(d) 135Answer

Question 10.

Which of the following angles can be constructed using ruler and compasses?

(a) 35

(b) 45

(c) 95

(d) 55Answer

Question 11.

With the help of a ruler and compasses which of the following is not possible to construct?

(a) 120°

(b) 135°

(c) 140°Answer

Question 12.

If the construction of a triangle ABC in which AB = 6 cm, ∠A = 70° and ∠B = 40° is possible then find the measure of ∠c.

(a) 40°

(b) 70°

(c) 80°Answer

Question 13.

Which of the following set of lengths can be the sides of a triangle?

(a) 2 cm, 4 cm, 1.9 cm

(b) 5.5 cm, 6.5 cm, 8.9 cm

(c) 1.6 cm, 3.7 cm. 5.3 cmAnswer

Question 14.

The construction of a triangle ΔABC in which BC = 6 cm, ∠A = 50° is not possible, when difference of BC and AC is equal to

(a) 4.6 cm

(b) 6.4 cm

(c) 5.1 cmAnswer

Question 15.

Which of the following angle can be constructed with the help of a ruler and a pair of compasses?

(a) 35°

(b) 40°

(c) 37.5°

(d) 47.5°Answer

Question 16.

To construct an angle of 60 degrees, we need to draw first:

(a) A ray

(b) An arc

(c) Two rays

(d) A straight lineAnswer

Question 17.

The side lengths 4 cm, 4 cm and 4 cm can be sides of:

(a) Scalene Triangle

(b) Isosceles Triangle

(c) Equilateral Triangle

(d) None of the aboveAnswer

Question 18.

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 = cAnswer

Question 19.

Which of these angles we cannot construct it using ruler and compasses?

(a) 120

(b) 70

(c) 60

(d) All can be constructedAnswer

Question 20

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

(a) 35

(b) 40

(c) 90

(d) 50