March 7 more with angles

DEFINITIONS FROM CLASS

1. Line: has no beginning point or end point.  Imagine it continuing indefinitely to both directions. We can illustrate that by little arrows on both ends

2. Ray: has a beginning point but no end point.  Think of sun's rays: they start at sun and go on forever.
3. Angel: made up from two rays that have the same beginning point.  That point is called the vertex and the two rays are called the sides of the angle.


From the picture above and from class today, an exterior angel is the angle between any side of a shape and a line extended from the next side.