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!

IXL F 2 Triangle Angle Sum Theorem

IXL Similar triangles

IXL F 3 Exterior Angle Theorem

IXL, Find missing angles in triangles

VIDEO IXL G 4 Review: interior and exterior angles of a polygon

IXL - Exterior Angle Theorem (Geometry practice)

IXL - Proofs involving triangles I (Geometry practice)

Exterior Angles of Triangles - Exterior Angle Theorem Differentiated Worksheets

Exterior Angles of Triangles: Solve for the Variable, Worksheet

IXL - Exterior Angle Theorem (Year 8 maths practice)

IXL, Find missing angles in triangles using ratios