An angle is a figure that consists of a point (the vertex of the angle) and two different rays outgoing from it (the arms of the angle).
The value of an angle between a minute and an hour hands at 3:10 o'clock is 30?.
The value of an apex angle at an equilateral triangle is equal to 60?.
The value of angle between a house wall and the ground is usually 90?.
You can see an angle of 120? in a honeycomb.
When a cylinder is sectioned along its axle, an angle between two radiuses on the section is 180?.
A 360? angle corresponds to a circle.