Mathematics for IGCSE & O level - Circle Theorems (Section 1 - No. 23)
Which statement accurately reflects the angle properties of a semi-circle?
The angle is always 180 degrees.
The angle is always 90 degrees.
The angle varies based on the radius.
The angle is always 45 degrees.
Объяснение
The angle inscribed in a semi-circle is always 90 degrees.