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平行四邊形的高
Author:
鍾文欽
Topic:
Parallelogram
GeoGebra
New Resources
四邊形的特性
兩位數加法
兩位數除以一位數（一）
球体的体积推导
柱體建築師
Discover Resources
包含除法（1 ÷分數）
數位學習社12/15
S3 Area and Volume
Exterior Angle Cyclic Quadrilateral
七巧板
Discover Topics
Indefinite Integral
Distributions
Geometric Transformations
Area
Logic