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Angle Addition Postulate?


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Answered 2009-08-30 01:45:55

It's very similar to the Segment Addition Postulate. m<ABC=m<ABD + m<DBC. An angle is a figure that's formed by two rays with a common endpoint called a vertex. (the vertex will always be in the center of your angle).

Ex:

m<ABD = 37 degrees and m<ABC = 84 degrees. Find m<DBC. It might help if you draw a picture. *Remember, BD bisects (or divides) <ABC*

m<ABC=m<ABD + m<DBC

84 degrees = 37 degrees + m<DBC

-37 -37

47 degrees = m<DBC

Now try one on your own:

m<XYZ = 121 degrees and m<XWY = 59 degrees. Find m<YWZ. Drawing a picture will help.

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