IXL Exterior angles of triangles

Extending one side of a triangle creates an exterior angle. Learn more about exterior angles and their properties in this free interactive lesson!

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IXL Interior angles of triangles

Interior & Exterior Angles of Triangles Matching Activity by Mrs D's Classroom

IXL Exterior angles of triangles

IXL Exterior angles of triangles

IXL F.4 Exterior Angle Inequality

IXL, Sums of angles in polygons

IXL - Exterior Angle Theorem (Year 8 maths practice)

IXL Solving right triangles

IXL, Identify alternate interior and alternate exterior angles