Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 3 - Parallel and Perpendicular Lines - Chapter Test - Page 211: 18



Work Step by Step

When l and m are parallel, we know that 2x-30 will be equal to the sum of x and the 45 degree angle. In other words: $2x-30=x+45\\ x= 75$
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