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超快國旗
Author:
a0915950717
猛猛滴
GeoGebra
很快喔
New Resources
兩組對邊相等的四邊形
異分母分數減法
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
球體建築師
Discover Resources
Right Triangles in a Circle 圓內的直角三角形
習題0330-2017
Tangent from an external point
箭头平移动画
長方形的周界與長和闊的關係 (學生版)
Discover Topics
Rectangle
Conic Sections
Trapezoid
Congruence
Complex Numbers