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Mathematics 23 Online
OpenStudy (anonymous):

Is this proof right? 1 + 2 = 180° Definition of Supplementary Angles 1 + 4 = 180° Definition of Supplementary Angles 1 + 2 = 1 + 4 Transitive Property of Equality 2 = 4 Subtraction Property of Equality

OpenStudy (anonymous):

OpenStudy (anonymous):

Yes

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