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Proof Without Words
Author:
Christian Uebel Søndergaard
,
Steve Phelps
Drag the points in the sketch below. What do you notice? What does this prove? How does this prove it?
GeoGebra
New Resources
Poorly Drawn Parallelograms
Construct a Conic
Icosahedron1
Explore the invariant lines of matrix {{-2,5},{6,-9}}
alg2_05_05_04_applet_exp_fxn_flvs
Discover Resources
squares
Pythagoras tree
Math really is amazing!
Pressler linear pair
Activity 2 Shell
Discover Topics
Angles
Logarithm
Logarithmic Functions
Geometric Transformations
Root