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SELIM
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SELIM925
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Rose Curve
רישום חופשי
Viviani's Curve
Angle Addition: Warm Up Exercises
Damped Trochoidal Curve
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ERIKA
Similar Right Triangles 20
rdoyleGC1
Reflect onto Itself 2
Conditions for Similarity of Triangles (2) 相似三角形的判別條件(2)
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Dilation
Symmetry
Median Line
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