21 and 24 are supplementary and m || n 23 and 24 are supplementary m21 + m24 = 180° m23+ m24 = 180° mz1+m24 = m23 + m24 m21 = m23 21 23 21 and 23 are alternate exterior angles fll a ? Definition of supplementary angles ? ? Definition of congruence Definition of alternate exterior angles ?

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
Problem 1CT
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m
4
1
2
3
Given: 21 and 24 are supplementary and m |l n
Prove: fll g
f
g
Transcribed Image Text:m 4 1 2 3 Given: 21 and 24 are supplementary and m |l n Prove: fll g f g
21 and 24 are supplementary and
m || n
?
23 and 24 are supplementary
m21 + m24 = 180°
m23+ m24 = 180°
m21 + m24 = mz3+ m24
m21 = m23
21 23
21 and 23 are alternate exterior
angles
fll a
?
Definition of supplementary angles
?
?
Definition of congruence
Definition of alternate exterior
angles
?
Transcribed Image Text:21 and 24 are supplementary and m || n ? 23 and 24 are supplementary m21 + m24 = 180° m23+ m24 = 180° m21 + m24 = mz3+ m24 m21 = m23 21 23 21 and 23 are alternate exterior angles fll a ? Definition of supplementary angles ? ? Definition of congruence Definition of alternate exterior angles ?
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