GraphicMaths - Angle in a semicircle is 90 degrees

The angle at the circumference in a semicircle is a right angle.

Circle theorem - the angle in a semicircle is a right angle - with proof

Angle on semicircle is 90 no matter where C is located – GeoGebra

Circle Theorem 3 - The Angle in a semi-circle is always 90 degrees #circletheorem #mathinar

Circle Theorem: Angle in a Semicircle Is 90° (Key Stage 3)

Circle Theorem Proofs Semi-Circle Centre Cyclic Quadrilateral - ppt download

GraphicMaths - Tangent and radius of a circle meet at 90°

Angle in a Semicircle - GCSE Maths - Steps, Examples & Worksheet

Circle Theorems, Angle in a semi-circle = 90 degrees, Euclidean Geometry

Angle in a Semicircle - GCSE Maths - Steps, Examples & Worksheet

Angle inscribed in a semicircle - Math Open Reference