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

Modifiable Right Triangular Prism
Perpendicular Lines: Quick Exploration
Linear Combination of Vectors
Right Triangle Inscribed in a Semicircle
Squaring a Rectangle (PST Version)

Discover Resources

Area of Traingle
circle
Pool Table
Αντιγραφή του Mass on a Ramp (Friction)
Hitomezahi Stitching

Discover Topics

Pie Chart or Circle Chart
Isosceles Triangles
Algebra
Reflection
Interest Calculation