Write a statement or reason to complete each step in the proof. The first one is done for you. 3. Given: m1=mZ2; Z1 and 22 are a linear pair. Prove: m21 = 90° Statement Reason 1. 21 and 22 are a linear pair. 1. a. Given 2. 21 and 2 are supplementary. 2. Linear Pair Theorem 3. m21 + m22 = b. 3. Definition of Supplementary Angles 4. m21=mZ2 4. Given 5. 2 mz1 =180° 5. C. Prop. of = 6. d. 6. Division Prop. of =

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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Write a statement or reason to complete each step
in the proof. The first one is done for you.
2
3. Given: mz1=m2; Z1 and 22 are a linear pair.
Prove: m21 = 90°
Statement
Reason
1. 21 and Z2 are a linear pair.
1. a.
Given
2. 21 and 22 are supplementary.
2. Linear Pair Theorem
3. mz1 + mZ2 = b.
3. Definition of Supplementary Angles
4. m/1=m22
4. Given
5. 2 mz1 = 180°
5. C.
Prop. of =
6. d.
6. Division Prop. of =
Transcribed Image Text:Write a statement or reason to complete each step in the proof. The first one is done for you. 2 3. Given: mz1=m2; Z1 and 22 are a linear pair. Prove: m21 = 90° Statement Reason 1. 21 and Z2 are a linear pair. 1. a. Given 2. 21 and 22 are supplementary. 2. Linear Pair Theorem 3. mz1 + mZ2 = b. 3. Definition of Supplementary Angles 4. m/1=m22 4. Given 5. 2 mz1 = 180° 5. C. Prop. of = 6. d. 6. Division Prop. of =
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