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练习（点，斜率，直线）
Author:
朱亮
GeoGebra
New Resources
Translation in 3D (via x, y, z)
Vector Projections
seo tool
רישום חופשי
GeoGebra Notes
Discover Resources
Single Slit Diffraction Wave Interference
matrix
Parrallelogram1514
Addie's y=(2/5)x Sketch
day 86
Astroid - Asztrois
Discover Topics
Special Points
Percentages
Terms
Geometric Distribution
Isosceles Triangles