Half the circumference of a circle has an arc of 180 degrees
It is half the circumference of a circle that has an arc of 180 degrees
It could be either acute or obtuse.
A minor arc.
A radian measures the degree of the arc. For instance, π radians is 180°. Then, the arc with π radians measures 180°.
a minor arc measures less than 180 degrees...
An arc whose measure is less than 180 degrees is called a Minor Arc.
A 180-degree arc is also called a half-circle.