A trapezoid is quadrilateral with at least one pair of parallel sides. The quadrilateral shown is a trapezoid. If m<1 = 90 and m< 3 = 160, what is m< 2+ m< 4?
Well the angles should all equal 360. Since you know 90 and 160 then 360-90-160=110. Angle 2 is 90* so 110-90=20 so angle 4 is 20. Angle 2+ angle 4: 90+20=110 or C :)
