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

רישום חופשי
bewijs stelling van Pythagoras
Fractal Tétraèdre. Dilatation -1/2 centre triangles
Parallelogram Anatomy
အခြေခံ data အခေါ်အဝေါ်များ

Discover Resources

Schiebung.ggb
Geit2.0
Interactive Rectangle (2 decimal places)

Discover Topics

Integers
Area
Geometric Transformations
Confidence Interval
Upper and Lower Sum or Riemann Sum