Question

A quadrilateral has angles measuring 105°,80°and 45°.What is the measure of the fouth angle?​

Answer 1

Answer: That cant be true because your supposed to add all the sides and it should be 180 but its not and their should only be 3 sids not 4

Answer 2

Well a Quadralateral is 360 degrees so you add all em up and get 230 so 360-230= 130 degrees