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三角形面積公式 1/2 bc sinA
Author:
羅驥韡 (Pegasus Roe)
Topic:
Area
GeoGebra
New Resources
算柱 (兩位數)
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拼砌四邊形
兩位數加法
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阿波羅尼奧斯圓
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垂心應用
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Mathematics
Linear Functions
Normal Distribution
Scalene Triangles
Numbers