- AABCD is a square
- B
- CNothing new
- DABCD is a rhombus but not a square
Step-by-Step Solution
∠BAC = ∠DAC = 45°. In △ABC, ∠B = 90°, so ∠BCA = 45° = ∠BAC, giving AB = BC. A rectangle with equal adjacent sides is a square.
Answer: A) ABCD is a square
ABCD is a rectangle in which diagonal AC bisects ∠A. What can you conclude?
Class 9Rectangle, Rhombus and SquareGeometry — Quadrilaterals
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