Triangle Names and Angle Sum (Interior and Exterior)

Author:Mr James Bowater, Morton Betts

How to name triangles. The conditions for naming triangles. Proof the sum of interior (inside) angles = 180 deg. Proof the other two angles equal exterior angle.

New Resources

拼砌四邊形 - 工作紙
Colors for GeoGebra
Intercepts in 3D
רישום חופשי
Luxembourg Symbol

Discover Resources

forum
Latihan 1.6
Manka
Taylor Series for Sin(x) Centered at Pi
ortogonal projektionsvektor
FunçãoModular

Discover Topics

Straight Lines
Division
Arithmetic
Fractions
Logic