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

Model sferyczny - sześcian-ośmiościan
¿Quién llegará más lejos en el mundial?
Angle Addition: Warm Up Exercises
רישום חופשי
bewijs stelling van Pythagoras

Discover Resources

fade
Exploring slope and y-intercept in " y = mx + b "
Altitudes of triangles
game
Komplexe Reihenschaltung
Symmetry: IM Geo.1.15

Discover Topics

Standard Deviation
Cosine
Division
Power Functions
Kite