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两个等腰三角形
Author:
孟宝兴
GeoGebra
New Resources
兩組對邊相等的四邊形
第八周作业
兩位數加法
錐體建築師
三位數除以一位數(一)
Discover Resources
公切線的條數
Fill the circle
平面方程式與法向量
CBTL_science_rcpet
正方形纸片剪出正三角形(顶点在边上)
Discover Topics
Volume
Random Variables
Root
Fractions
Arithmetic Operations