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congruent (SSS) 2
Author:
Ricky Chan
GeoGebra
New Resources
兩位數加法
判斷球體
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
四邊形的特性
Discover Resources
旋轉動畫
第三冊
test book
橢圓面積的計算
二面角
Discover Topics
Bar Chart or Bar Graph
Random Variables
Logarithm
Angles
Pie Chart or Circle Chart