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

Line and Circle Practice
random coprime pairs
Visualizing the Pythagorean Identity with Sine and Cosine
z`]]
Perspective in Art

Discover Resources

Project
Polynomials and Factoring Word Problems
PacMaze2jackie
Diagonal of a parallelogram

Discover Topics

Functions
Tangent Line or Tangent
Pie Chart or Circle Chart
Geometric Transformations
Terms