3 Squares Problem (II)

Author:Tim Brzezinski

Creation of this applet was inspired by a post from eyleMMath. How can we formally prove that the measures of the two red angles are equal? Is this possible to prove without using trigonometry?

New Resources

רישום חופשי
Perpendicular Lines: Quick Exploration
Pythagorean Theorem: Quick Illustrator
Function Art 3D - Flower
Congruent Sides & Angles in △s: Exploration

Discover Resources

Translations
Images for the Eye & the Mind's Eye
Introduction to GeoGebra
Graphing Lines
day 94

Discover Topics

Means
Complex Numbers
Derivative
Set Theory
Centroid or Barycenter