Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 4 - Congruent Triangles - 4-5 Isosceles and Equilateral Triangles - Lesson Check: 1

Answer

a) 70 b) 53

Work Step by Step

For an isosceles triangle, the two angles created where the legs and the base meet are congruent. Thus, angle A is 70 degrees. For part b, the angle is marked as congruent. Thus, we know that angle A for part b measures 53 degrees as well.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.