"Well, Lou, the best way to learn about compasses and direction is to start thinking in circles...." |
"Catch this dizzy dame!" |
"Don't be nervous, Lou! OK. Here's a circle. It has a center and an outside, called the CIRCUMFERENCE." |
"Now, let's divide the circumference into parts. (Each part is called an arc.) Divide it into 2 equal parts, and what do you have? Two equal arcs called SEMI-CIRCLES. And if you divide it into four equal arcs, each arc is a 'quarter circle' or 'QUADRANT.' Now comes the fancy part: divide the circumference into 360 equal arcs, and each arc is called a DEGREE. So tell me, Lou, how many degrees is a semi-circle? How many degrees is a quadrant?" |