Respuesta :

[tex]\begin{gathered} \text{triangle sum theorem says:} \\ \angle1+\angle2+\angle3=180 \end{gathered}[/tex][tex]\begin{gathered} \text{definition of supplementary angles:} \\ \angle3+\angle4=180 \end{gathered}[/tex][tex]\begin{gathered} \text{can you se}e\text{ my message ?} \\ \text{its uploading} \end{gathered}[/tex][tex]\begin{gathered} \text{substraction property of equality} \\ \angle1+\angle2=\angle m4 \end{gathered}[/tex]

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