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Cut-The-Knot-Action 11!
Author:
Tim Brzezinski
Topic:
Equilateral Triangles
Creation of this applet was inspired by a
tweet
from
Alexander Bogomolny
.
How can you formally prove what this applet informally illustrates?
GeoGebra
Quick (Silent) Demo
New Resources
Average Rate of Change: Graph a Function (2)
Tutorial: Create lists of numbers and objects
alg2_05_05_01_slider_practice_flvs
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Poorly Drawn Parallelograms 3
Discover Resources
Colour Mixing-Gujarati
Hexahedron
angle in the same segment
MyProject
พื้นผิวในปริภูมิสามมิติ
Discover Topics
Solids or 3D Shapes
Right Triangles
Constructions
Pythagoras or Pythagorean Theorem
Means