Q: A pentagon with one interior angle that measures 210 0 is a?

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A concave pentagon.

210 degrees.

Exterior angle of any plane figure total 360 degrees, so 360 - (110 + 100) ie 360 - 210 = 150

Suppose the angle is x degrees. Then its supplement is 180 - x and complement is 90 - x So 180 - x + 90 - x = 210 ie 270 - 2x = 210 so 2x = 60 or x = 30

505 What? (505)

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A concave pentagon.

An irregular pentagon

An angle that measures 210 degrees is a reflex angle.

210Â° is a reflex angle. A reflex angle is between 180Â° and 360Â°.

210 degrees.

210/3=70

Suppose the angle is x degrees. Then its supplement is 180 - x and complement is 90 - x So 180 - x + 90 - x = 210 ie 270 - 2x = 210 so 2x = 60 or x = 30

Exterior angle of any plane figure total 360 degrees, so 360 - (110 + 100) ie 360 - 210 = 150

There are: 210/30 = 7

An angle that is 210 degrees would be considered a "Reflex" angle. This is because its measurements exceed 180 degrees. Anything above 90 degrees is "obtuse". Once you hit 180 it becomes a "straight" line and anything above that is a "reflex".

505 What? (505)

210 degrees