Triangle Internal and External Angle Sum
- Author:
- Isaac Mannion
Created By Isaac Mannion
Use the worksheet to explore the angle sum in triangles. The check boxes and slides show the angles in the triangle and the siders group the angles together. As an extension the external angle sum can be explored.
Use the sliders and check boxes to explore the angles within the traingle. The triangle can be resized to see what effect changing the size has.