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

Constructing Equilateral Triangles + Activities
bewijs stelling van Pythagoras
Constructing the Copy of an Angle + Angles Activities
GeoGebra around GeoGebra
Constructing an Inscribed Equilateral Triangle + Activities

Discover Resources

Tangent Properties 4
Explore trigonometry
Midsegment locus
ggb_prob5
Open Top Box w Spreadsheet
arc length of Sectors

Discover Topics

Quadrilaterals
Normal Distribution
Area
Calculus
Bar Chart or Bar Graph