Chapter 10.2, Problem 35E

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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Use slopes to decide whether the triangle with vertices at

To determine

**To check:**

Whether the triangle with vertices at

Explanation

To check the triangle to be right triangle, we need to prove that any two lines are perpendicular to each other.

By theorem,

If two lines are perpendicular, then the product of their slopes is

(i.e) If

The slope of the line that contains the points

Let

Let

The given points are

Using the slope formula and choosing

The given points are

Using the slope formula and choosing

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