Worksheet on Geometry for Class 4

Solved Questions on Geometry

1. Choose the odd one out.

a)
b)
c)
d)

Answer: d) 

Explanation: Figures in options (a), (b) and (c) are cylinders except in option (d).

2. What is the measure of each angle of an isosceles right triangle?

a) 90°; 30°; 30°
b) 90°; 45°; 45° 
c) 90°; 60°; 30° 
d) 90°; 60°; 45° 

Answer: b) 90°; 45°; 45° 

Explanation: Measure of each angle of an isosceles right triangle is 90°, 45° and 45°.

3. What is the reflex angle for the angle given below?

a)
b)
c)
d)

Answer: c) 

Explanation:

The reflex of the angle 22° = 360° − 22°
                                        = 338°

4. Identify the type of triangle based on angles.

a) Scalene triangle
b) Isosceles triangle
c) Equilateral triangle
d) Obtuse triangle

Answer: c) Equilateral triangle

Explanation: It is an equilateral triangle where all three sides are of the same length and all the three angles are equal. Measure of each angle is 60°.

5. What is the value of each equal angle of the given isosceles triangle?

a) 44°
b) 54°
c) 64°
d) 84°

Answer: c) 54°

Explanation: Sum of the three angles in the triangle = 180°
Measure of both the equal angles of the given isosceles triangle = 180° − 72° = 108°
Measure of each equal angle of the given isosceles triangle = 108° ÷ 2 = 54°