Question

If ∠BAD = 90°, find ∠BCD.

• A. ${90}^o$
• B. ${75}^o$
• C. ${45}^o$
• D. ${60}^o$

Answer 1

The correct option is A ${90}^o$

Properties of a rectangle:
(1) Opposite sides are equal.
(2) Opposite sides are parallel.
(3) All angles are equal to 90°.
(4) Sum of adjacent angles is 180°.

So, ∠BAD = ∠BCD = 90°