Monday, March 2, 2009

Supplementary Angles / Colinear Angles

FYI I could not find a definition for supplementary angles that didn't involve the word "pair" or the phrase "two adjacent angles."
I also could not find collinear angles.
So I guess the proof needs revised.

I can see my blog now, I don't know what was wrong.
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1 comment:

  1. KG SHAFERMarch 4, 2009 at 8:55 AM

    Thanks for checking on this term.

    I have not seen a definition that extends to more than two angles so I stick with "a pair" of angles.

    There is a common misunderstanding that complementary angles must be adjacent. MANY textbooks will illustrate these angles as adjacent so I talked about this back in my Chapter Two. They do not need to be adjacent.

    If two angles are a linear pair, then they are supplementary because they have measures that add to 180 degrees.

    If two angles (or more) form a linear pair then the sum of the measures of the angles is 180, by the addition property.

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