Acute angle, right angle, dun angle, flat angle and perimeter angle are different

Acute angle, right angle, dun angle, flat angle and perimeter angle are different

An angle with an acute angle greater than zero and less than 90 degrees
A right angle equals 90 degrees
The obtuse angle is greater than 90 degrees and less than 180 degrees
A flat angle equals 180 degrees
The circumference is equal to 360 degrees

Choose right or wrong. The angle greater than obtuse angle and less than circumference angle is flat angle
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It does not include superior angle, but only acute angle, right angle, obtuse angle, horizontal angle and perimeter angle.

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