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橢圓2-四圓心近似法
Author:
13陳柏禎
橢圓2-四圓心近似法
GeoGebra
New Resources
直角坐標平面上的旋轉變換
拼砌四邊形
三位數除以一位數（一）
兩位數加法
兩組對邊相等和有直角的四邊形
Discover Resources
Sequence指令練習(包絡線：橢圓)
同心圓和線段-3(線段到最外圓有小圓)
area 面積4
時針與分針的夾角
Introduction to Rectangular Coordinates
Discover Topics
Special Points
Perimeter
Orthocenter
Kite
Integral Calculus