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  1. A road sign is in the shape of a regular decagon. What is the measure of each angle on the sign? Round to the nearest tenth.

(1 point)

1,440°

144°

72°

216°

Verified Answer :

MissPhiladelphia

There is a formula to determine the size of each interior angle of the polygon with sides n.

\(Angle = (n-2)( \frac{180}{n} )\)

A decagon is a polygon with 10 sides. So, we substitute n with 10.

\(Angle = (10-2)( \frac{180}{10} )\)

Angle = 144 degrees

Thus, the each angle of the sign's side is 144 degrees.

I hope I was able to explain it clearly. Have a good day.

Cregustersbrown

Answer:

144

Step-by-step explanation:

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