Mathematics for IGCSE & O level - Circle Theorems (Section 1 - No. 44)
What is the name of the theorem that states the angle in a semicircle is a right angle?
Alternate Segment Theorem
Angle at the Center Theorem
Angle in a Semicircle Theorem
Cyclic Quadrilateral Theorem
解释
The angle in a semicircle is a right angle.