BBC4 年
Angles, lines and polygons - Edexcel
The angles inside a shape are called interior angles. If the side of a triangle is extended, the angle formed outside the triangle is the exterior ... d = b\) (alternate angles are equal ...
BBC4 年
Angles, lines and polygons - AQA
The angles inside a shape are called interior angles. If the side of a triangle is extended, the angle formed outside the triangle is the exterior ... d = b\) (alternate angles are equal ...