Objective :
2 Objective Classify angles as:
right
obtuse
acute
straight
Classifying Angles :
3 Classifying Angles Acute: angle measuring less than 90°.
Obtuse: angle measuring more than 90° and less than 180°.
Right: angle measuring 90°.
Straight: angle measuring 180°.
Identifying Angles :
4 Identifying Angles Refer to your notes and identify the angle.
Explain how you know. Straight Angle
Identifying Angles :
5 Identifying Angles Refer to your notes and identify the angle.
Explain how you know. Right Angle
Identifying Angles :
6 Identifying Angles Refer to your notes and identify the angle.
Explain how you know. Acute Angle
Identifying Angles :
7 Identifying Angles Refer to your notes and identify the angle.
Explain how you know. Obtuse Angle
Measuring Angles :
8 Measuring Angles The angle of the hands on a clock is formed with one hand on the 12 and one hand on the 6.
What is the measure of this angle? 180 degrees
Measuring Angles :
9 Measuring Angles On a baseball field, the bases form angles. What is the measure of the angle that home plate, first base and second base make with each other?
(First base being the vertex). 90 degrees
Objective :
10 Objective Classify angles as:
right
obtuse
acute
straight