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The interior angles of a four-sided object always at to 360 degrees. Therefore, if you know the other three angles, the solution to the fourth angle is: Angle4 = 360 - (Angle1 + Angle2 + Angle3) or... Angle4 = 360 - Angle1 - Angle2 - Angle3

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Q: Ok so you have a four sided shape and iyou have 3 or the angles how do you work out the 4th angle HELP ME?
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