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Mathematics 8 Online
OpenStudy (anonymous):

example of a substitution property using this A=angle mA4 = mA1 + mA2 im thinking mA4 + mA3= mA1 + mA2 + m A 4

OpenStudy (anonymous):

i dont think the first mA4= mA1 + mA2 matters

OpenStudy (anonymous):

no the bottom one

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