What would you like to do?
An angle with radii as sides and the center as the vertex?
They are referred to "adjacent angles"
False. There are infinitely many angles at the centre of the circle.
That is the central angle.
A central angle. The section of the circle formed by that angle and the part of the circle (the part being the circumference) between the radii is called a sector.
The vertex of an angle is the point at which the two rays that form the angle meet. opposite point
Vertex of an angle, is the point in which the sides of the angle meet.