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Author:
Walerij Koschkin
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[教学] 解题提示：圆周角与圆心角T1
inverse of sin x
[教学] 解题提示：圆周角与圆心角T2
Reflections, Rotations, Dilations, and Translations
Rotating Squares
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Protractor Practice
Derrivatives
Grund areal
Linear Programming for application problem
Rotating a Triangle in a Coordinate Plane
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Planes
Straight Lines
Quadrilaterals
Arithmetic
Right Triangles