Answer
No
Work Step by Step
It is not necessary because only two are needed to find the point of concurrence. The third will simply verify the accuracy of your construction by making sure they all intersect at the same point.
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 7 - Section 7.2 - Concurrence of Lines - Exercises - Page 325: 8
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