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

Deciding How New Information Affects Probability
Building Algebra Tile Models for Trinomials
Marion's Theorem
Writing and Graphing Proportional Relationships (k>0)
Graphing Basic and Compound Inequalities

Discover Resources

Battleship
parallel line
พาราโบลา
Graph Transformations: Discovering Manipulating Functions
example

Discover Topics

Congruence
LCM and GCD
Normal Distribution
Integral Calculus
Cone