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Proof Without Words: 45-45-90
Author:
Steve Phelps
GeoGebra
New Resources
aperiodic monotile construction_step by step
Droste effect
探究由平行線和截線所成的角
Kopie von parabel - parabol
bearing HK
Discover Resources
ED331 Kite Maker
Midpoints of a quadrilateral
Angle at centre
Hiperbola (Revisi)
Estabrook_Dilation Design
Discover Topics
Pythagoras or Pythagorean Theorem
Special Points
Rhombus
Vectors
Subtraction