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給三角形, 求以三頂點為圓心, 作三個外切圓
Author:
dunst kang
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等和有直角的四邊形
找出對稱軸
三位數除以一位數（一）
四邊形的特性
Discover Resources
KidEdu
尺規作圖找平方根點(以根號2為例)
乘法1
MY first GGBBook
-(√3/2)³ ≤ sinα sinβ sinγ ≤ (√3/2)³
Discover Topics
Upper and Lower Sum or Riemann Sum
Rotation
Quadrilaterals
Right Triangles
Tangent Line or Tangent