Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 2 - Section 2.3 - Proving Lines Parallel - Exercises - Page 88: 27

Answer

x=9$^{\circ}$

Work Step by Step

Angles 2 and 6 are corresponding angles so they are congruent. m$\angle$2=m$\angle$6 x$^{2}$-9=x(x-1) x$^{2}$-9=x$^{2}$-x -9=-x x=9
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