# GoGeometry Action 102 !

- Author:
- Tim Brzezinski

- Topic:
- Square

Creation of this applet was inspired by a tweet from Antonio Gutierrez (GoGeometry).
You can adjust the sizes of the 3 squares by dragging the LARGE WHITE POINT.

**What is the measure of the GRAY ANGLE?****What is the measure of the PINK ANGLE?****How can we formally prove your answers to both these questions true?**