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15 Proof Without Words
Author:
Linda Bollman
,
Steve Phelps
Drag the points. Drag the slider. What do you notice? What does this prove? How does this prove?
GeoGebra
New Resources
Kopie von parabel - parabol
alg2_05_05_01_applet_exp_2_flvs
Rings of circles
What is an Isogonal Conjugate?
Shade a spheric triangle with "surface".
Discover Resources
test!
Puzzle: Four Blues and Four Reds
TNB 12.3 23
Activity 1: Matrices as linear transformations
Poorly Drawn Isosceles Triangles
Discover Topics
Rotation
Mathematics
Random Variables
Secant Line or Secant
Logarithmic Functions