ashley24109
16.07.2019 •
Mathematics
What is the sum of the measures of the interior angles of a nonagon?
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Ответ:
A nonagon has 9 sides, so plug in 9 for n.
(9 - 2) × 180
7 × 180 = 1,260
A nonagon's interior angles add up to 1,260°.
Ответ:
correct answer is 2800.
Step-by-step explanation:
You take the area of the square which is 20x20 = 400.
There is 5 squares 400x5 = 2000
There is 4 triangles--which is 1/2 the area of 1 square (In this case).
One triangle = 200
200x4 = 800
2000 + 800 = 2800