## ICSE Class 9 Construction of Polygons MCQ New Pattern

*ICSE Class 9 Construction of Polygons MCQ**By Clarify Knowledge*

## ICSE Class 9 Construction of Polygons MCQ Table

## OUR EBOOKS CAN HELP YOU In ICSE Class 9,10

## CODE IS EASY CAN HELP YOU

## ICSE Class 10 All Subject MCQ

### ICSE Class 9 Construction of Polygons MCQ HERE

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

a. 35°

b. 40°

c. 90°

d. 50°

**2) Which of the following angles can be constructed using a ruler and compasses?**

a. 35°

b. 45°

c. 95°

d. 55°

**3) Which of these angles we cannot construct it using a ruler and compasses?**

a. 120°

b. 70°

c. 60°

d. All can be constructed

Answer:** b**

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

a. 120°

b. 60°

c. 140°

d. 135°

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:** 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:** 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:** 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:** 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:** 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:** d**

**11) With the help of a ruler and a compass, it is possible to construct an angle of**

(a) 35°

(b) 37.5°

(c) 40°

(d) 47.5°

Answer: **b**

Explanation: With the help of a ruler and compass, it is possible to construct an angle of 37.5°.

**12) With the help of a ruler and a compass it is not possible to construct an angle of **

(a) 22.5°

(b) 37.5°

(c) 40°

(d) 67.5°

Answer:** c**

Explanation: With the help of a ruler and a compass it is possible to construct the angles of 22.5°, 30°, 45°, 60° etc. (i.e)multiples of 15° and its angle bisector. Hence, it is not possible to construct a 40° angle using a ruler and compass.

**13) The construction of a triangle ABC in which AB = 4 cm, ∠A = 60° is not possible when the difference of BC and AC is equal to**

(a) 2.5 cm

(b) 3 cm

(c) 3.5 cm

(d) 4.5 cm

Answer: **d**

Explanation: Among the options given, 4.5 >4, since the difference of any two sides of a triangle cannot be greater than the third side.

**14) A triangle ABC with AB = 4 cm and ∠A= 60° and ∠B= 40° is constructed. Then what is the measurement of ∠C?**

(a) 40°

(b) 60°

(c) 80°

(d) 100°

Answer: **c**

Explanation:

By using the angle sum property of a triangle,

∠A+∠B+∠C = 180°

60°+40°+∠C = 180°

∠C = 180°-100°= 80°.

**15) The construction of a triangle ABC, given that BC = 6 cm, ∠B = 45° is not possible when the difference of AB and AC is equal to:**

(a) 4 cm

(b) 5 cm

(c) 5.2 cm

(d) 6.9 cm

Answer: **d**