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

Rolling Circles and Polygons
apec
Viviani's Curve
Nikmati Keunggulan Di Bandar Judi Terpercaya
Building Triangles with Set Areas

Discover Resources

Ένας Κύλινδρος πάνω σε Κινούμενη Βάση
Forum_34225_A1_Fläche zwische funktionen
intersection of 3 medians
Quadratic Solver
Quadrilateral
Koch's Snowflake

Discover Topics

Diagrams
Differential Equation
Congruence
Incircle or Inscribed Circle
Correlation