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过圆上一点作切线,三步
Author:
u.jianwang
GeoGebra
New Resources
三位數除以一位數(二)
拼砌四邊形
異分母分數減法
兩位數除以一位數(一)
找出對稱軸
Discover Resources
點到直線距離
直角三角形斜邊上的高小於斜邊的一半
用方程解周界問題
虎牙直播
随机三角形背景
Discover Topics
Piecewise Functions
Rectangle
Difference and Slope
Combinatorics
Incircle or Inscribed Circle