Steps to using a
protractor |

1. Look at the angle you are
measuring. |

2. If the angles are
greater than 90 degrees
(an obtuse angle) use the scale that is greater than 90. |

3. If the angles are
less than 90 degrees
(an acute angle) use the scale that is less than 90. |

4.
Place the protractor on the angle so
that the center point
is on the vertex and the zero line is
along one side of the angle. |

5. Follow the
scale beginning at zero and find the
number where the other side of the angle
intersects the scale on the
protractor. |

6. The
number where the
line intersects is
the degree of the angle. |