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謝爾賓斯基三角形
Author:
李詠甯
GeoGebra
New Resources
兩位數除以一位數（一）
画直线等分三角形的面积
畫出對稱圖形
拼砌四邊形
算柱 (兩位數)
Discover Resources
Compound Inequalities(複合不等式)
翰林卷第10题
x^3导数求导
雙曲線2--焦點法
Copy of cos, sin 與單位圓
Discover Topics
Diagrams
Orthocenter
Pyramid
Optimization Problems
Logarithm