Measure and Classify Angles

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Presentation transcript:

Measure and Classify Angles OBJ: To ID. and Classify Angles To Use angle + Postulate To ID and use Congruent angles and the bisector of an angle

Angles RAYS- aka sides VERTEX or Measure the distance between the 2 rays. C A B name with 3 non-collinear pts with vertex in the middle Or by vertex if only 1 angle can be formed RAYS- aka sides VERTEX or

Opposite Rays A B C Remember: Angles are measure in degrees which come from circles 1/2 way around a circle = 180 degrees

Plane Parts An angle in a plane divides the plane into 3 parts. Interior-between rays Exterior- outside rays A B C Angle itself

Classification of Angles Right Angle Acute Angle Obtuse Angle Angle = 90 degrees Angle < 90 degrees Angle > 90 degrees

Angle Addition Postulate B C D If D is in the interior of then Converse: If then D is in the interior of

Homework: Put this in your agenda Pg 29 15 – 27, 29-32, 39 - 42