   Chapter 1.6, Problem 29E ### 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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# Without writing a proof, explain the conclusion for the following problem. Given: A B ↔ Prove: m ∠ 1 + m ∠ 2 + m ∠ 3 + m ∠ 4 = 180 To determine

To explain:

The conclusion for the given problem.

Explanation

Given:

The given figure is,

The given line is AB and m1+m2+m3+m4=180°.

Approach:

The sum of angles formed on straight line is supplementary angle. Measure of supplementary angle is 180°.

Calculation:

The angles 1, 2, 3

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