Geometry: Common Core (15th Edition)

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

Chapter 5 - Relationships Within Triangles - 5-4 Medians and Altitudes - Practice and Problem-Solving Exercises - Page 313: 25



Work Step by Step

An altitude is a perpendicular line segment drawn from the vertex of a triangle to a side opposite the vertex. An altitude for $\triangle ABC$ is $\overline{BD}$ because it is a perpendicular line segment that originates at vertex $B$ and contacts $\overline{AC}$, which is the side opposite vertex $B$.
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