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Acute angle, right angle, obtuse angle, right angle, rounded corner, what other angles are there?
Acute angle: An angle less than 90 is called acute angle.

Right angle: An angle equal to 90 is called a right angle.

Oblique angle: an angle greater than 90 and less than180 is called obtuse angle.

Boxer: An angle equal to 180 is called a boxer.

Excellent angle: more than180 and less than 360 is called excellent angle.

Bad angle: more than 0 and less than 180 is called bad angle, and acute angle, right angle and obtuse angle are all bad angles.

Fillet: An angle equal to 360 is called a fillet.

Negative angle: the angle formed by clockwise rotation is called negative angle.

Positive angle: the angle of counterclockwise rotation is positive angle.

Angle 0: An angle equal to zero.