2010 · Q59
In the figure given above (circle with centre O; chords AC and BD intersect at P inside), O is the centre of the circle. AC and BD intersect at P. If ∠AOB = 100°, what is ∠APB ?
Elementary MathematicsGeometry
- A77°
- B80°
- C85°
- D90°
Explanation
With ∠AOB=100° and the figure, ∠APB=80°.