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平行四邊形
Author:
Hin Chan
Topic:
Parallelogram
平行四邊形的高和底
GeoGebra
New Resources
三位數除以一位數（一）
兩位數除以一位數（一）
讀磅
漂亮的摇摆曲线
画直线等分三角形的面积
Discover Resources
圆的面积展开
Product_TEST_01
正多面體
Book10-Unit7-拼出平行四邊形
任務2的副本
Discover Topics
Pie Chart or Circle Chart
Subtraction
Geometric Transformations
Translation
Natural Numbers