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已知正三角形內部一點到三頂點距離求面積
Author:
連琨銘
GeoGebra
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拼砌四邊形
第八周作业
柱體建築師
算柱 (兩位數)
小数 的副本
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test
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
Angle in the same segment
黃金矩形
容量(閱讀不同刻度的量杯)
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Quadrilaterals
Trigonometric Functions
Planes
Statistical Characteristics
Pyramid