   Chapter 2.2, Problem 13E ### 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 l is not parallel to m , then ∠ 1 ≅ ∠ 2 .

To determine

To write:

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

Explanation

Given:

The given statement is,

If 𝓁 is not parallel to m, then 12.

Approach:

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

Assume,

12

And 𝓁 is parallel to m.

By hypothesis,

𝓁 is not parallel to m

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