Answer :

cfelk12345
1 and 4
3 and 2
2 and 4
3 and 1
In order to find supplementary angles you have to find angles that add up to 180 degrees, which is a straight line.
1 and 3
1 and 4
2 and 3
2 and 4

The angles that are supplementary must add up to be a straight line [180 degrees]

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