   Chapter 4.2, Problem 10E ### 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 ∆ A B C , M and N are midpoints of A C ¯ and B C ¯ , respectively. If M N = 7.65 , how long is A B ¯ ?

To determine

The length of AB¯.

Explanation

Approach:

The line segment that joins the midpoints of two sides of a triangle is parallel to the third side and has length equal to one half the length of the third side.

Calculation:

Given,

M and N are the mid points of the sides AC and BC respectively

MN=7.65

The line segment that joins the midpoints of two sides of a triangle is parallel to the third side and has length equal to one half the length of the third side.

Thus,

MN¯=12AB¯

7

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