ABCD is a rhombus where A=(-3,0),B=(0,4),C=(5,4) and D=(2,0) Prove that the diagonals are perpendicular bisectors of on

ABCD is a rhombus where A=(-3,0),B=(0,4),C=(5,4) and D=(2,0) Prove that the diagonals are perpendicular bisectors of on another.
網(wǎng)上是這樣說的：.因為ABCD is a rhombus[ABCD是菱形],所以the diagonals are perpendicular bisectors of on another[一條對角線垂直并平分另一條對角線]
可如果這樣,A=(-3,0),B=(0,4),C=(5,4) and D=(2,0)又有什么用呢

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