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Author:Peter Han, Steve Phelps

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Perpendicular Lines: Quick Exploration
Function art 3D - waiting shed
Isosceles Right Triangle
Pythagorean Theorem: Quick Illustrator
Congruent Figures

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LEGO multiplication
EllipseReflect
CK Challenge JK Turducket
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LINES PARALLEL TO AXES

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Isosceles Triangles
Tangent Line or Tangent
Sequences and Series
Optimization Problems
Tree Diagrams

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