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Reflection across a line
Reflection = 180° Rotation about a Line
bewijs stelling van Pythagoras
Pitfalls of Disk/Washer Method
Triangle with 3 Right Angles
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Forum_f=1&t=39073_D_GeoDreieck
pinwheels
Factor
Special Angles on Parallel Lines
Truncated Tetrahedron
Reflection and Refraction
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Integers
Diagrams
Function Graph
Integral Calculus
Right Triangles