Cut-the-Knot-Action 13!

Author:Tim Brzezinski

Creation of this applet was inspired by a tweet from Alexander Bogomolny. LARGE points are moveable at any time. How can you formally prove what this applet informally illustrates?

New Resources

Building Triangles with Set Areas
Area of a Circle Illustrated
Area of a Trapezoid
Untitled
רישום חופשי

Discover Resources

Segments and Midpoints
Tech quiz
tav.6 Micozzi-Doti
กราฟของสมการเชิงเส้นตัวแปรเดียว
The Red Chair

Discover Topics

Integers
Functions
Median Line
Reflection
Geometry