Question

ABCD is a cyclic trapezium, AD is parallel to BC and ∠ABC = 72° then ∠BCD = ?
1. 72°
2. 22°
3. 62°
4. 55°

Answer 1

Correct Answer - Option 1 : 72°

Given:

ABCD is a cyclic trapezium, AD is parallel to BC and ∠ABC = 72°

Calculation:

In a cyclic trapezium where AD is parallel to BC.

∠A = ∠D

∠B = ∠C

so, ∠BCD = 72°