hello everyone i am trying to help my son with his homework and i need to no how do you come up with an answer for a or wgat is a quadrilateral angles

Question

anonymous · Answer

can someone help

anonymous · Answer

We'd like to help with a specific question!

anonymous · Answer

yes please

anonymous · Answer

Please post the whole question as its original from the source!

anonymous · Answer

if a quadrilateral has angles 62*, 98* and 102* what is the measure of the fourth angle

anonymous · Answer

x = 360 - ( 62 +98 +102 )

anonymous · Answer

Can you finish it up?

anonymous · Answer

but how did you no to do that im trying to understand it to be able to come up with the answer. and thanks