Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 3 - Section 3.3 - Isosceles Triangles - Exercises - Page 151: 19



Work Step by Step

The answer is 55$^{\circ}$ because 180-70=110 and because you need two of the same angles divide 110 by 2 and you will get 55$^{\circ}$. Because the triangle is an isosceles triangle you need two angles to be congruent.
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