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三角形相似
Author:
杨玉梅
Topic:
Geometry
GeoGebra
New Resources
拼砌四邊形
四邊形的特性
異分母分數減法
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
Task4
特別角的三角函數值(1)
Similar triangles
Rectangle
中國剩餘定理 (Chinese Remainder Theorem)
Discover Topics
Equilateral Triangles
Boxplot
Set Theory
Statistical Characteristics
Upper and Lower Sum or Riemann Sum