GoGeometry Action 53!

Topic:Angles, Incircle or Inscribed Circle, Right Triangles

Creation of this applet was inspired by a tweet from Antonio Gutierrez. What is the measure of the blue angle? How can we formally prove this true?

Quick (Silent) Demo

New Resources

Addition within Two Places
Marion's Theorem
အခြေခံ data အခေါ်အဝေါ်များ
z`]]
Dividing a 3-digit number by a 1-digit number (1)

Discover Resources

Inscribed
proportions game
Sin título
Derivative Function: Without Words
Plotting of Points

Discover Topics

Isosceles Triangles
Orthocenter
Complex Numbers
Cuboid
Triangles