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平行四边形面积演示
Parallelogram: Area
平行四边形面积演示
Author:
颖杰 范
Parallelogram: Area
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Parallelogram: Area
New Resources
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
柱體建築師
拼砌四邊形
Discover Resources
題3
四角柱算體積(可以切開)
圓內接正N邊形
-1 ≤ cosA cosB cosC ≤ 1/8
拋物線5-包絡線法
Discover Topics
Algebra
Step Functions
Sine
Special Points
Plane Figures or Shapes
