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(n+1)^2 = n^2 + 2n + 1

Author:beckykwarren

How many green diamonds? How many grey ones and how many blue ones?

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Building Triangles with Set Areas
Pathway to Proof: Triangle Angles
Area of a Circle Illustrated
Building Parallelograms with Set Areas
Rolling Circles and Polygons

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Pantin et parallélisme
Week 12 - 17-gon
hysteresis_avec_JavaScript
The Sprinkler Problem
How long was Jack walking? - A visual solution.
Construct an Inscribed Equilateral Triangle

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Cone
Equilateral Triangles
General Quadrilateral
Ratios
Matrices

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