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內切圓
Author:
楊明德
Topic:
Incircle or Inscribed Circle
GeoGebra
New Resources
兩位數加法
畫出對稱圖形
拼砌四邊形
球体的体积推导
兩位數除以一位數（二）
Discover Resources
分數(約分)
(004)80201辛宇婕
mooc第四讲作业单晨
容量(閱讀不同刻度的量杯)
翰林數學_2下_CH4-3_梯形中線性質
Discover Topics
Rotation
Normal Distribution
Line Segment
Logarithm
Solids or 3D Shapes