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9/20 Bell Ringer Step 1: Grab papers from front of the room Step 2: On your bell ringer sheet: Draw a diagram that includes F, U, and N such that you have all three points, a line, and a ray. HOMEWORK:HOMEWORK: Finish IP and study for Quiz tomorrow.

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9/20 News and Notes Quiz Tomorrow Hand in your Chicago Map Projects

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9/20 Agenda I CAN define an angle and its parts and classify it as acute, obtuse, or right. 1.Bell Ringer 2.Intro to New Material 3.Guided Practice 4.Independent Practice

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Intro to New Material What is an angle? Two rays sharing an endpoint. In the space provided, draw a picture of this.

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Continued What do we call this endpoint? –VERTEX of the angle. What do we notice about our 3 examples on the board? –Small, medium and large –AKA Acute, Right, and Obtuse

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Vocabulary Angle 2 rays sharing a common endpoint Vertex The point at which 2 rays meet to form an angle. Acute Angle Angle less than 90° Right Angle Angle = 90° Obtuse Angle Angle greater than 90° Vertex

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Guided Practice I will now show you 10 different angles, you have 15 seconds to write if they are acute, right or obtuse. We will learn how to name an angle as we go.

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#1 D E F Angle DFE (or EFD) is Acute

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#2 D E F Angle FDE (or EDF) is Obtuse

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#3 B E N Angle BNE (or ENB) is Right

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#4 X Z Y Angle YXZ (or ZXY) is Acute

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#5 D A Angle A is obtuse B

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#6 U A Angle A (or CAU, UAC) is Acute C

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#7 D A Angle A ( or BAD, DAB) is obtuse B 93°

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#8 D A WHAT IS ANGLE DAE? B ACUTE E

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#9 D A WHAT IS ANGLE DAB? B OBTUSE E

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#10 Y R WHAT IS ANGLE TRY? T RIGHT E

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Independent Practice You now have all but the last 5 minutes of the class period to work on the Independent Practice portion of your notes. IT IS DUE TOMORROW

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ACT Question of the Day Which of the following statements is true? A.Angle TRY is acute B.Angle YRE is acute C.Angle TRD is obtuse D.Angle TRE is right Y R T E D HOMEWORK: Finish IP and study for Quiz tomorrow.

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