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Published byValentina Ludlam Modified over 2 years ago

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+ 1-4 Angle Measure

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+ Real-World

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+ 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

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

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

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

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

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

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

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