Using a rotation matrix to move points

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This sketch shows how a rotation matrix can be used to transform a polygon in the plane. Experiment with moving B around the circle to see how that transforms the triangle.

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COE Pricing
Simple Sine Table
Cosine function graph with sliders
HI-ggb50
ระบบสมการเชิงเส้นสองตัวแปร
Sebastian Melton_Testing Similarity Theorems

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拋物線
外接圓
Pythagoras or Pythagorean Theorem
垂心
積分

Using a rotation matrix to move points

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