- A75°
- B115°
- C57.5°
- D65°
Step-by-Step Solution
Opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre: ∠AOB + ∠COD = 180°, so ∠COD = 65°.
Answer: D) 65°
Quadrilateral ABCD circumscribes a circle with centre O. If ∠AOB = 115°, find ∠COD.
Class 10Tangent Lengths and IncirclesGeometry
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