- AIts opposite angles add up to 180°
- BIts diagonals bisect each other
- CIts opposite angles are equal
- DAll its angles are equal
Step-by-Step Solution
If ∠ = ∠, then ∠ = ∠° − . So ∠A + ∠° and ∠ + ∠°. Opposite angles are equal only in a parallelogram.
Answer: A) Its opposite angles add up to 180°