Find the remaining angles in the following trapeziums — Class 8

Find the remaining angles in the following trapeziums — Class 8

Question 1.

Find the remaining angles in the following trapeziums — Class 8

Solution:

∠A = 180° - 135° = 45°

and ∠B = 180° - 105° = 75°

(Because AB || CD).

∠Q = ∠P = 100° and ∠R = ∠S = 80°,

because PQRS is an isosceles trapezium.

Question2.

If PAIR qnd RODS are two rectangles, find ∠IOD. Class 8

Solution:

∠ROI = 180° - 30° - 90° = 60°

So, ∠IOD = 90° - 60° = 30°