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相机光圈模拟（3D）
Author:
孟宝兴
Topic:
Mode
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
找出對稱軸
算柱 (兩位數)
Discover Resources
aaa aaa aaa aaa
Rotational Symmetry - Tetrahedron
正三角形內一點P, 到三頂點距3,4,5
教學成果
Light reflected in ellipse
Discover Topics
Definite Integral
General Quadrilateral
Straight Lines
Polygons
Cuboid