Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 10 - Geometry - 10.2 Triangles - Exercise Set 10.2: 4

Answer

Angle A=35 degrees

Work Step by Step

3 angles in a triangle add up to 180. Step 1: Add the two given angles. 55+90=145 Step 2: Subtract 145 from 180. 180-145=35 Angle A=35
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