Which expression is equivalent to n + n - 0.18n?
2 answers:
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Answer:
2340 degrees.
Step-by-step explanation:
The sum of the interior angle measures of any polygon can be calculated using the following expression ( is the number of sides the polygon has):
For a 15-sided polygon, plug in 15 for n and simplify:
Multiply to solve:
For a 15-sided polygon, the sum of the interior angles must be 2340 degrees. You can go a step further and divide 2340 by 15 to figure out the individual measure of each interior angle (156 degrees).