Internal angle sum of triangles

Author:mrsK

- Drag the vertices A, B, C to create different types of triangles. - Use the sliders to create copies of the same triangle and prove that the internal angles always add up to 180 degrees.

New Resources

Other Variations of Cosine
Trammel of Archimedes Art
အခြေခံ data အခေါ်အဝေါ်များ
bewijs stelling van Pythagoras
Rolling a Square

Discover Resources

Transformations of the Sine Function (MCF3M0)
Geogebra Activity 2
forumGeoGebraf11t42177
Harley McKittrick- HEXAGON
Bisecting an Angle

Discover Topics

Boxplot
Differential Calculus
Scalene Triangles
Poisson Distribution
Arithmetic