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Similar Pythagorean 3 4 5 Triangles
Author:
Graeme McRae
Topic:
Triangles
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Diagonals of a Rectangle
Letters
Proof without words: An imaginery export by JGEX
Rainbow pendulum
Multiplication Challenge
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Generic Washer
Elder Cabrera Hernandez
JDC12215 Circumcenter
课堂小练习（根据方程画直线）
Angle Bisector Task - ready
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Rectangle
Vectors
Quadrilaterals
Isosceles Triangles
Diagrams