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凹四边形
Author:
张老师
GeoGebra
New Resources
双心四边形
活动三：应用性质
直線的斜率：水平變化 & 鉛垂變化
异形操场
平行線的判定
Discover Resources
Cross Section of a rectangular pyramid
科學記號與小數點的位移
畢氏定理
線型函數
Question 8
Discover Topics
Perimeter
Subtraction
Trigonometric Functions
Calculus
Conic Sections