180/60 is 3 degrees
Chat with our AI personalities
A 180-degree arc is also called a half-circle.
A minor arc.
A major arc
An arc that lies between the sides of a central angle of 180 degrees is known as a semicircle. A central angle of 180 degrees is half of a full circle, so the corresponding arc covers half of the circumference of the circle. In geometric terms, a semicircle is a special case of an arc where the angle subtended by the arc is exactly 180 degrees.
Messier 14 or NGC 6402 has an apparent dimension of 11 minutes of arc.