If the circumference of circle 1 were divided into degrees, each degree would be so small an arc that it would look like a dot.
If a degree were divided into sixty equal parts, each part would be called a minute.
If a minute were divided into sixty equal parts, each part would be called a second.
How many degrees in the large circle of Fig. 2?
How many in the smaller one?
Has a large circle any more degrees than a small circle?
In the large circle how many degrees from a to b?
In the small circle how many from a to b?
Which is greater, an arc of ninety degrees of the large circle, or one of ninety degrees of the small one?
Which is greater, an arc of a degree of the large circle, or one of a degree of the small one?