   Chapter 2.4, Problem 40E Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

For the lamppost of Exercise 39, Suppose that m ∠ A = m ∠ B and that m ∠ C = 3 ( m ∠ A ) . Find m ∠ A , m ∠ B and m ∠ C . Exercises 39 ,   40

To determine

To find:

The values of mA, mB and mC.

Explanation

Given:

mA=mB �and mC=3(mA)

Figure (1)

Approach:

The sum of interior angles of a triangle is equal to 180°.

Calculation:

mA+mB+mC=180°

Substitute 3(mA) for mC, and mA for mB�in equation (1)

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