Answer
The first step of this given statement is, "$m \angle 2 \lt 90$."
Work Step by Step
An indirect proof starts off by negating what we want to prove.
The first step of this given statement is, "$m \angle 2 \lt 90$."
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 5 - Relationships Within Triangles - 5-5 Indirect Proof - Practice and Problem-Solving Exercises - Page 319: 9
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