If two angles are on the same line, how do you prove they're supplementary?

0 ⤊

If two angles are on the same line, how do you prove they're supplementary?

It seems that I'm forgetting the easiest concepts! I know it's got something to do with Angle Addition Postulate or definition or supplementary, but I don't know how to prove it exactly. Any help is much appreciated.

2007-12-02 08:05:55 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 answers

A pair of angles are supplementary if the sum of the angles equals 180 degrees.

Hope this helps!

2007-12-02 08:10:31 · answer #1 · answered by Mr. Orange 1 · 0⤊ 0⤋

If two angles are on the same line they are supplementary if the two angles together form a straight angle.

Supplementary angles add to 180° which is a straight angle.

2007-12-05 13:29:12 · answer #2 · answered by Northstar 7 · 0⤊ 0⤋