2.  DEGREE:The unit of angle measure Uses the symbol ˚  PROTRACTOR: A tool for measuring and sketching angles of a given measure.

3.  Use a protractor to measure DEF ◦Place the center middle of the protractor on the angle ◦Note where the 0 (not the 180) is: top or bottom ◦Measure the other angle using numbers on the same top/bottom  DEF = 125˚

4.  Find BXE, CXE, and AXB ◦BXE = ◦CXE = ◦AXB = 115˚ 85˚ 65˚

5.  RIGHT ANGLE: An angle with measure of 90˚  ACUTE ANGLE: An angle with measure between 0˚ & 90˚  OBTUSE ANGLE: An angle with measure between 90˚ & 180˚

6.  Classify each as acute, right, or obtuse angles obtuseright acute

7.  The measure for B is 138˚. Solve for x.  5x – 7 = 138 +7 +7  5x = 145 5 5  x = 29

8.  Assignment ◦Worksheet #3-2