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椭圆的定义

Author:guomenglin

New Resources

美國國旗 (Codex 版)
Fibonacci Clock
小数的副本
判斷球體
Nested spiral octagon

Discover Resources

Function3
多边形对角线
相似形的應用
S0E6 三角形三边关系
贪吃蛇（第一版）

Discover Topics

Angles
Definite Integral
Root
Surface
Integral Calculus

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