Sum of interior angles in triangles and quadrilaterals Welcome to your Sum of interior angles in triangles and quadrilaterals quizPlease click "Next" Determine the missing angle ° Determine the measure of the missing anglesThey are ° each Determine the missing angle ° Determine the measure of the missing anglesx = 83, y = 100x = 100, y = 83 Determine the measure of the missing anglesEach angle is ° Time is Up! Time's up