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Japanese Theorem for Pentagons

Author:David Falk

New Resources

Perpendicular Lines: Quick Exploration
Parabolas, Lines and Nomograms
Congruent Figures
Function art 3D - waiting shed
Writing and Graphing Proportional Relationships (k>0)

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Finding the centre point of an arc with chords
Introduction to chromogeometry
Plane and 3 points - Demo
Joshua Cool
Polygon Interior and Exterior Angles

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Conic Sections
Trigonometry
Poisson Distribution
Solids or 3D Shapes
Indefinite Integral

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