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周界
Author:
kpkong
,
spkwan
,
Tim Brzezinski
GeoGebra
GeoGebra
New Resources
找出對稱軸
三位數除以一位數(一)
拼砌四邊形
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
距離和
任意兩正方形切割重組成一大正方形之動態證明
省政信箱
斜率乘积为定值(椭圆、双曲线)
圆链的反演
Discover Topics
Quadrilaterals
Variance
Circle
Cuboid
Straight Lines