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 - 3-6 Constructing Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises - Page 188: 42


28 segments

Work Step by Step

If n is the number of points, then $\frac{n(n-1)}{2}$ is the number of segments. You can therefore plug 8 in for n and then solve to get 28: $\frac{8(8-1)}{2}$= $\frac{8(7)}{2}$ = $\frac{56}{2}$ = 28
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