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Triangle Sums

Author:Eugene Tsai

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Area of a Circle Illustrated
Focus and Directrix
Building Parallelograms with Set Areas
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Parallelogram Anatomy

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Triangle Reflection Exploration
Tessellation with Pentagrins
Plano Cartesiano 1
Isosceles out of a base and a line
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Real Numbers
Perimeter
Square
Conditional Probability
Triangles

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