   Chapter 2.2, Problem 14E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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# In Exercises 12 to 14, write the first statement of the indirect proof of the given statement.If A B ¯ is not perpendicular to B C ¯ , then ∠ A B C is not a right angle.

To determine

To write:

The first statement of the indirect proof of the given statement.

Explanation

Given:

The given statement is,

If AB¯ is not perpendicular to BC¯, then ABC is not a right angle.

Approach:

In indirect proof the contradiction of the given statement should be considered.

Assume,

ABC is a right angle.

Then, AB¯ is perpendicular to BC¯

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