CALCULUS Understanding Its Concepts and Methods

Equilateral and isosceles triangles

A triangle is equilateral if all its sides are
equal, in which case each angle is
60^{o}.

A triangle is isosceles if two of its sides are equal. Its base angles are the angles opposite the equal sides. They are equal also.

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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.