Cut-The-Knot-Action 8!

Author:Tim Brzezinski

Creation of this applet was inspired by a tweet from Alexander Bogomolny. How can you formally prove that the area of the orange triangle is less than or equal to

of the area of the ENTIRE TRIANGLE?

New Resources

Damped Trochoidal Curve
အခြေခံ data အခေါ်အဝေါ်များ
Model sferyczny - sześcian-ośmiościan
Viviani's Curve
Trefoil Knot

Discover Resources

Cardioïde point par point
Determinante 3x3 e volumes
Circumcenter Construction
Plopping Dots

Discover Topics

Right Triangles
Polygons
LCM and GCD
Logic
Pie Chart or Circle Chart