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平行四邊形的高
Author:
鍾文欽
Topic:
Parallelogram
GeoGebra
New Resources
三位數除以一位數（二）
四邉形 (四年級) 教師版
判斷球體
異分母分數減法
兩位數除以一位數（一）
Discover Resources
直线倾斜角与斜率
Introduction to Rectangular Coordinates 直角坐標簡介
testssss
指数函数的副本
巧算周界
Discover Topics
Natural Numbers
Trapezoid
Differential Calculus
Secant Line or Secant
Cone