- A60°
- B90°
- C120°
- D150°
Step-by-Step Solution
OA = OB (half of equal diagonals), so ∠OBA = ∠OAB = 30°. ∠AOB = 180° − 60° = 120°.
Answer: C) 120°
Diagonals of rectangle ABCD meet at O. If ∠OAB = 30°, find ∠AOB.
Class 9Rectangle, Rhombus and SquareGeometry — Quadrilaterals
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