Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 5 - Section 5.3 - Proving Triangles Similar - Exercises - Page 242: 3b



Work Step by Step

All equilateral triangles are similar by AA. Each angle of an equilateral triangle is $60^{\circ}$. Thus, every angle in one equilateral triangle will be congruent to every angle of another equilateral triangle.
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