Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 7 - Review Exercises - Page 338: 20


The orthocenter is the intersection of the three altitudes of the triangle. Here, point $D$

Work Step by Step

An altitude of a triangle passes through a vertex and meets the other side in right angle. Here, an altitude passes through $A$ and meets $BC$ in right angle.
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