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If 23 measures 123, what is the measure of 24?5/6MadisonRiverA bridge crosses over the Madison River.The opposite banks of the river are paralleland the bridge is a transversal.3/412A. 180°B. 90°C. 123D. 57°

If 23 measures 123 what is the measure of 2456MadisonRiverA bridge crosses over the Madison RiverThe opposite banks of the river are paralleland the bridge is a class=

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Angles m3 and m4 are adjacent to each other and together form a straight line. This means that they are supplementary angles. The sum of supplementary angles is equal to 180°, so:

[tex]\begin{gathered} \angle3+\angle4=180\degree \\ 123\degree+\angle4=180\degree \\ \angle4=180\degree-123\degree \\ \angle4=57\degree \end{gathered}[/tex]