空间三角形面积一个三维空间中的三角形面积怎么求?3点坐标分别是(x1,y1,z1),(x2,y2,z2),(x3,y3,z3)
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![空间三角形面积一个三维空间中的三角形面积怎么求?3点坐标分别是(x1,y1,z1),(x2,y2,z2),(x3,y3,z3)](/uploads/image/z/6954326-62-6.jpg?t=%E7%A9%BA%E9%97%B4%E4%B8%89%E8%A7%92%E5%BD%A2%E9%9D%A2%E7%A7%AF%E4%B8%80%E4%B8%AA%E4%B8%89%E7%BB%B4%E7%A9%BA%E9%97%B4%E4%B8%AD%E7%9A%84%E4%B8%89%E8%A7%92%E5%BD%A2%E9%9D%A2%E7%A7%AF%E6%80%8E%E4%B9%88%E6%B1%82%3F3%E7%82%B9%E5%9D%90%E6%A0%87%E5%88%86%E5%88%AB%E6%98%AF%EF%BC%88x1%2Cy1%2Cz1%EF%BC%89%2C%EF%BC%88x2%2Cy2%2Cz2%EF%BC%89%2C%EF%BC%88x3%2Cy3%2Cz3%EF%BC%89)
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