Geometry: Common Core (15th Edition)

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

Chapter 1 - Tools of Geometry - 1-3 Measuring Segments - Practice and Problem-Solving Exercises: 28

Answer

6, -1, 1, -6

Work Step by Step

As established in questions 26 and 27, R can be 5 or -5, and T can be 7 or -7. This makes 4 options for lines. R=5, T=7 R=5, T=-7 R=-5, T=7 R=-5, T=-7 To find the midpoint of these lines, take the average of the two points (to do this, add them up and divide by two). This gives 6, -1, 1, and -6.
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