Section 1.3: Angles Tuesday, 9/3 Wednesday, 9/4 ^^^Table of Contents.

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Presentation transcript:

Section 1.3: Angles Tuesday, 9/3 Wednesday, 9/4 ^^^Table of Contents

Warm-up Draw and label a picture for the following problems. Then, solve and decide whether the picture “makes sense.” Solve (30-x)+(6x+175)=180 Draw Alternate Interior angles of (10x-7) and (7x+11) and solve.

Agenda Warm-up Essential Idea: Angles are used to measure difference in direction. We need certain words to describe certain relationships.

Ray Word: Ray Definition Examples Non Examples The basic idea:

Labeling Angles Word: Angle Definition Examples Non Examples The basic idea:

Protractor

Kinds of Angles Acute angle: an angle between 0 and 90 degrees (Draw an example) Right angle: a 90 degree angle (draw an example) Obtuse angle: An angle between 90 and 180 degrees. (draw an example) Straight angle: Formed by two opposite rays and measures 180 degrees (draw a picture)

Practice with Protractors

Angle Bisector Word: Angle Bisector Definition Examples Non Examples The basic idea:

Assignment Get out assignment log Ask questions about assignment New Assignment: Section 1.3 #1-10 on page 24 I will collect your notebook at the end of class, so this will have to be done on a separate paper.

Quiz Time Take your time. Use your notes. I will give ½ a point extra credit for each problem where you explain whether the picture makes sense or doesn’t make sense. I will collect and grade your notebook at the end of class.