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[中考] 2017 北京-26-半圆内的直角三角形
Author:
洋葱教研
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
判斷球體
錐體建築師
三位數除以一位數（一）
Discover Resources
斜率 - 概念及定義 (2)
圓柱體與長方形的關係
兩位小數
認識角度
动圆与两圆外切与内切(2)
Discover Topics
Trigonometry
Symmetry
Subtraction
Upper and Lower Sum or Riemann Sum
Arithmetic Mean
