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1.4 Angles & their measures

1.4 Angles & their measures - 1.4 Angles their...

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1.4 Angles & their Measures p. 26
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Angle symbol: 2 rays that share the same endpoint (or initial point) Y Z Sides – the rays XY & XZ it’s the only <X in the diagram). Angles can also be named by a #. (<5) 5
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There are 3 different <B’s in this diagram; therefore, none of them should be called <B. A B C D <B ?
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Angle Measurement Angle Measurement m<A means the “measure of <A” Measure angles with a protractor. Units of angle measurement are degrees ( o ). Angles with the same measure are congruent angles . If m<A = m<B, then <A <B. 2245
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Postulate 3 : Protractor Post. The rays of an angle can be matched up with real #s (from 1 to 180) on a protractor so that the measure of the < equals the absolute value of the difference of the 2 #s. 55 o 20 o m<A = 55-20 = 35 o
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Interior or Exterior? B is ___________ C is ___________ D is ___________ in the interior in the exterior
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1.4 Angles &amp; their measures - 1.4 Angles their...

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