Key term for Edexcel GCSE Mathematics, used in Properties and Constructions.
A geometric rule stating that the exterior angle of a triangle equals the sum of the two opposite, remote interior angles.
Exterior angle theorem appears in Edexcel GCSE Mathematics revision content for Geometry and Measures, especially Properties and Constructions and Quadrilaterals and Triangles.
Create a free account to access Edexcel GCSE Mathematics revision notes, track progress, and practise related key terms.
