Triangle Exterior Angle Sum Theorem

Author:GreenMaths

Move the sliders what do you notice about the exterior angle and the interior opposite angles. you can move the sliders back and drag the points to change the shape of the triangle.

New Resources

Task 3 - Custom Solid 1
Riemann Sums
Steel Chair
Which Quadrilateral is Which?
Transforming Random Variables

Discover Resources

Tessellating a Plane with a Triangle through Rotation
Stat displays
Discovering Trig Ratios
Nets
A Look into Heaven

Discover Topics

Plane Figures or Shapes
Probability
Real Numbers
Percentages
Histogram