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+ 1-4 Angle Measure. + Real-World + Vocabulary Ray- a part of a line Opposite rays- a point on a line determines exactly 2 rays called opposite rays.

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Presentation on theme: "+ 1-4 Angle Measure. + Real-World + Vocabulary Ray- a part of a line Opposite rays- a point on a line determines exactly 2 rays called opposite rays."— Presentation transcript:

1 + 1-4 Angle Measure

2 + Real-World

3 + Vocabulary Ray- a part of a line Opposite rays- a point on a line determines exactly 2 rays called opposite rays Angle- formed by 2 noncollinear rays that have the same endpoint Vertex- the common endpoint of the angle Interior- all points that lie inside the angle Exterior- all points that lie outside the angle Degree- unit of angle measurement Angle Bisector- a ray that divides an angle into 2 congruent angles

4 + Angle VERTE X RAY 110° INTERIOR EXTERIOR X L P

5 + Types of Angles RIGHT ANGLE -measures 90° ACUTE ANGLE -measures less than 90° OBTUSE ANGLE -measures more than 90°

6 + Examples Name the vertex of each angle: 1. <4 2. <1 Name the sides of each angle: 3. <4 4.

7 + Practice Name the vertex of each angle: 1. <5 2. <3 Name the sides of each angle: 3. <6 4.

8 + Examples Classify each angle as right, acute, or obtuse: 7.

9 + Practice Classify each angle as right, acute, or obtuse: 7.


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