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Angle Side Angle
Postulate 4.15
Two triangles are congruent if two angles and the included side of the one triangle are
congruent, respectively, to two angles and the included side of the other (ASA)
L
Given:
OM bisects <LMN
<LOM = <NOM
Prove: that
LMO
NMO
O
M
N
Statement
1. <LOM = <NOM
2. MO = MO
3. OM bisects <LMN
4. <LMO = <NMO
5. LMO
NMO
Reason
1. Given
2. Reflexive
3. Given
4. Def of a Bisector
5. ASA  ASA
http://www.mathwarehouse.com/geometry/congruent_triangles/angle-side-anglepostulate.php
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