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羊角螺线[Euler spiral】
Author:
赵林
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
畫出對稱圖形
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
中垂線性質
gjc091a27 三角形旋轉
圓所形成的三角形
Congruent Triangle (ASA)
斜率是定值
Discover Topics
Vectors 2D (Two-Dimensional)
Upper and Lower Sum or Riemann Sum
Circle
Hyperbola
Calculus