SOLUTION: How to solve the measure of fourth angle of a quadrilateral given the three angles

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Question 1016598: How to solve the measure of fourth angle of a quadrilateral given the three angles
Found 2 solutions by Fombitz, fractalier:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The angles of a quadrilateral sum to 360.
So if you know 3 of them, you can solve for the fourth.
A%5B4%5D=360-A%5B1%5D-A%5B2%5D-A%5B3%5D

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
All four add to 360 degrees, right?
Well, if you know three of them, can you add those together and subtract that total from 360?
Of course you can...