Chapter 10.2, Problem 41E

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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Quadrilateral

To determine

**To prove:**

The quadrilateral

Explanation

To prove that the quadrilateral is a trapezoid, one of the opposite sides must be parallel,

By theorem,

If two lines are parallel, then their slopes are equal.

(i.e) If

So we can prove this by using the slopes.

Thus we have to prove the line

The slope of the line that contains the points

Let

The given vertices are

Using the slope formula and choosing

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