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In rectangle ABCD, the diagonals meet at O and ∠ACB = 25°. Find ∠AOB.

Class 9Rectangle, Rhombus and SquareGeometry — Quadrilaterals
  • A25°
  • B65°
  • C50°
  • D130°

Step-by-Step Solution

OB = OC, so ∠OBC = ∠OCB = 25° and ∠BOC = 130°. ∠AOB and ∠BOC form a linear pair: ∠AOB = 50°.
Answer: C) 50°

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