Question

This question is from "three dimensional geometry"
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Show that the four points A(5,-1,1),B(7,-4,7),C(1,-6,10) and D(-1,-3,4) are the vertices of a parallelogram.

Answer 1

first find AB, BC, CD, DA by using distance formula

then if it comes AB=BC=CD=DA and then find it's diagonal i. e AC and BD

if it comes AC not equal to BD then it is a parallogram u have u show that in diagonal are not equal and all sides are equal.

hope it may help u

Answer 2

Answer:

Hi there

here distance of AB=7 =BC=CD=AC units so it is a square and as we know that square is also a parallelogram.

Step-by-step explanation: