Help me please on this IXL

asked Feb 7, 2023 60.9k views

1 vote

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7 votes

Answer:

Explanation:

Using the exterior angle theorem,

$c-15+c-18=c+28 \\ \\ 2c-33=c+28 \\ \\ c-33=28 \\ \\ c=61$

Djentleman answered Feb 11, 2023

4.0k points

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