- AA rectangle with unequal sides
- BA kite only
- CA square
- DA trapezium
Step-by-Step Solution
Adjacent angles of a parallelogram add to 180°, so all angles become 90°. Equal sides plus right angles make a square.
Answer: C) A square
A rhombus has one angle of 90°. What is it?
Class 9Rectangle, Rhombus and SquareGeometry — Quadrilaterals
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