A semi-circle, half a circle, by definition is 180 degrees, half of a rotation. A whole circle has a whole rotation, which is 360 degrees.
Chat with our AI personalities
It's a STRAIGHT angle
180 degrees * * * * * No, it is 90 degrees.
you can measure a angle with a protracte.
The measure of the obtuse angle would then be double that of the acute angle.
What does a straight angle measure?