By A Mystery Man Writer
Extending one side of a triangle creates an exterior angle. Learn more about exterior angles and their properties in this free interactive lesson!
IXL O.12 8th Grade Math Exterior Angle Theorem (FMP)
Exterior Angles of Triangles (variables on both sides) by Managing Mathematics
IXL, Checkpoint: Triangles and transversals
IXL, Exterior angles: find angle measures
IXL F3: Exterior Angle Theorem (Geometry)
IXL F.4 Exterior Angle Inequality
IXL - Exterior Angle Theorem (Year 8 maths practice)
IXL - Proofs involving triangles I (Year 10 maths practice)
IXL - Exterior Angle Theorem (Geometry practice)
IXL, Exterior angles: find angle measures
Interior and Exterior Angles of Triangles Odd Man Out by Math is FUNtastic
IXL Interior angles of triangles
IXL, Proofs involving triangles I
IXL Similar triangles
IXL Geometry F3: Exterior Angle Theorem