GoGeometry Action 28! (Quick Angle Problem)

Author:Tim Brzezinski

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

New Resources

Quadrant Illustrator
Squares Question
挂谷问题——三尖瓣形
Function art 3D - waiting shed (v2)
What Do You See? (2)

Discover Resources

Tangents to a Circle
Hexagon inside a Circle
heather
Guadalupe Guzman C2
Geogebra Assignment #8 Q1 (Ben Lee)

Discover Topics

Interest Calculation
Sequences and Series
Cone
Mathematics
Trigonometry