An arc whose measure is less than 180 degrees is called a Minor Arc.
The complete arc of a semicircle is 180 degrees
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
Major Arc
A major arc
A minor arc.
180/60 is 3 degrees
a semi-circle
less than 180 degrees
Semi-circle.
semicircle