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3 years ago

Find the sum of the angle measures in a regular polygon.

Mathematics

2 answers:

Oksana_A [137]3 years ago

6 0

Answer:

D) 1260°

Step-by-step explanation:

In an n-sided polygon, the sum of all angles is equal to (n-2)*180°.

Look at it this way - let's add a point in the middle and connect it to each vertex. Then we've got n triangles for a total of n*180°, but all of the angles at the middle point aren't "part" of the polygon, so a full 360° angle should be subtracted, giving us n*180°-360° = (n-2)*180°

You can easily confirm that it works for triangles and quadrangles ;)

The figure in the picture has 9 sides, so the sum of angles is (9-2)*180° = 7*180° = 1260°

Stells [14]3 years ago

5 0

1260°

hope this helps ^-^

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deff fn [24]

Answer:

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Step-by-step explanation:

Given:

Distance between Katherine and Beatrice when they start moving towards each other= 20 miles

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To Find:

Time taken for Katherine and Beatrice to meet each other

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