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Bellwork. If Nick earns commission on his sales in the following way: 4 % on his first $15,000 and 7% on anything over $15,000. What would his sales commission be if his actual sales were $42,000?. Daily Activities. Timed Skill Drill. Homework Review. Pre-Algebra. obj. 7.3.f.
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Bellwork • If Nick earns commission on his sales in the following way: 4 % on his first $15,000 and 7% on anything over $15,000. What would his sales commission be if his actual sales were $42,000?
Daily Activities • Timed Skill Drill • Homework Review
Pre-Algebra obj. 7.3.f The Angel of Angles
Angle Facts • Angles form when two rays meet at a common endpoint. • The meeting point of two rays is called the vertex. • Angles are named either by one letter assigned to the vertex (∠G) or three letters with the vertex in the center and the other two letters denoting the rays (∠RGH). • Angles are measured in units called degrees. R (Ray) H G (Vertex) (Ray)
Angles are classified by size. • Right angles • Straight angles • Acute angles • Obtuse angles
Right Angles • Angles that measure exactly 90º
Straight Angle • An angle that measures exactly 180º
Acute Angles • Angles that measure less than 90º
Obtuse Angles • Angles that measure more that 90º
Can you identify the angle? Acute, Obtuse, Right, Straight
Can you identify the angle? Acute, Obtuse, Right, Straight
Can you identify the angle? Acute, Obtuse, Right, Straight
Can you identify the angle? Acute, Obtuse, Right, Straight
Can you find all the angle types? Acute, Obtuse, Right, Straight
Other Classifications? Complementary • Two angles whose sum is • Two angles whose sum is TIP: Complementary = Corner Supplementary TIP: Supplementary = Straight Line
Measuring Angles Protractors have two sets of numbers going in opposite directions. Be careful which one you use. Think: Should the angle I am measuring be larger than 90 or smaller?
Let’s Try! Example 1 B Y N T Example 2 B Z G T
Example 3 This is an obtuse angles. We know that obtuse angles are greater than . Which scale should we use to measure “G” . Small or large? What is the measure of “G”?
S E Z YOU TRY!!! Example 1 N Example 2 S U G X
You Try Example 3…… W Find = _______
Closure Write the 4 classifications of angles (& the 2 sub-classifications) and how to tell the difference between them.