Fill in the Blank Center - This is the center of the protractor. This point will lie on the of the
angle you are measuring or creating.

• Bottom Line - This will either be a solid line along the bottom of the protractor, or a broken line shown in the middle and on both sides of the center. This line will lie on top of the bottom
of the angle you are measuring or creating.

First Scale - This is the scale along the outside of the proctor. It is used to measure angles that open from the
and fan out in a clockwise motion.
.
Second Scale - This is the scale along the inside of the protractor. It is used to measure angles
that open from theand fan out in a counterclockwise motion.