CALCULUS Understanding Its Concepts and Methods
Home Contents Index
Altitudes of a triangle
An altitude of a triangle is a perpendicular line from a vertex to the opposite side (extended if necessary).
The three altitudes of a triangle (extended if necessary) meet at a single point called the orthocenter of the triangle.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Law of cosines
Law of sines
Copyright © 2006 Darel Hardy, Fred Richman, Carol Walker, Robert Wisner. All rights reserved. Except upon the express prior permission in writing, from the authors, no part of this work may be reproduced, transcribed, stored electronically, or transmitted in any form by any method.