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Cut-the-Knot Action 15!
Author:
Tim Brzezinski
Topic:
Circumcircle or Circumscribed Circle
,
Incircle or Inscribed Circle
Creation of this applet was inspired by a
tweet
from
Alexander Bogomolny
.
How can we formally prove THIS to be true?
GeoGebra
Quick (Silent) Demo
New Resources
Icosahedron1
Poorly Drawn Parallelograms 3
Parallelograms: Quick Investigation
Average Rate of Change: Graph a Function (1)
Quiz: Finding Average Rate of Change
Discover Resources
Hypocycloid
Multiplication Array
Testing_Sharing
N1 Plating and Structural steel Drawings
surface area of a solid of revolution
Discover Topics
Parametric Curves
Similar Triangles
Cone
Cylinder
Pythagoras or Pythagorean Theorem