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GeoGebra
推移（x 方向）
Author:
羅驥韡 (Pegasus Roe)
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GeoGebra 23
will beasley
Rotations, Reflections, and Dilations
Secant-Secant Relationship Inside a Circle
Ex 4.4 (4)
New Resources
Rotate using positive or negative angles
Surrounding Triangles and the Pythagorean Theorem
Example QF.FORM .4
Trapezoid: Area Formula
sin+cos
