Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Appendix A - The Language of Mathematics - Exercises - Page A6: 16


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Work Step by Step

First, the converse statement is: If the triangle ABC is an isosceles triangle then it is equilateral. The counterexample is the triangle ABC in which $AB=5 $ cm and $AC=5 $ cm and $BC=10$, which is not equilateral.
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