SOLUTION: In concave kite ABCD, there is an interior angle at vertex B that is a reflex angle. Given that m∠A = m∠C = m∠D = 40°, find the measure of the indicated reflex angle in deg

Question 1193074: In concave kite ABCD, there is an interior angle at vertex B that is a reflex angle.
Given that m∠A = m∠C = m∠D = 40°, find the measure of the indicated reflex angle in degrees.

Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

In a concave quadrilateral, the sum of the interior angles is still 360 degrees.

Given the measures of three of the angles as 40 degrees each, the measure of the reflex angle is 360-3(40)=240 degrees.

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