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Author:Marc Douglas

New Resources

Fractal Tétraèdre. Dilatation -1/2 centre triangles
Sum of Squares: Proof without Words
Mondrian's Puzzle
Area of a Circle Illustrated
Focus and Directrix

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practice
#5 18-gon with diagonals
LZ 8.5.11.2 Height and Volume
Project

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Right Triangles
Cuboid
Ratios
Multiplication
Pythagoras or Pythagorean Theorem

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