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

Special Right Triangles 30°-60°-90° and 45°-45°-90°
Translation of the Graph of a Function
दुई-ओटा समुहको संयोजन (Union of two sets)
Limaçons
bewijs stelling van Pythagoras

Discover Resources

Key Stage 3
UCSS Math I 5.1.2 Example 1
q123_machines
Simple Discrete Fourier Transform
Translations Assessment 2

Discover Topics

Geometric Transformations
Logarithmic Functions
Isosceles Triangles
Probability
Diagrams