Find the length of the altitude, [math]x[/math], of [math]\bigtriangleup{ABC}[/math].

[list=1][br][*]Identify the similar triangles.[br][*]Use corresponding sides to write a proportion containing [math]x[/math].[br][*]Summarize your findings.[br][/list][br][br]This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.[br]