Answer:
A, 150
Explanation:
A kite has 4 interior angles and the sum of these interior angles is 360°. In these angles, it has one pair of opposite angles that are obtuse angles and are equal.
Ok, so we have R=150 as an obtuse angle. Draw out your kite and label the angles. The angle across from R will also be 150. These together make 300 degrees. The two acute angles will be S=50, and 10 degrees, because we have to have 60 total more degrees from the previous 300. We don't know whether T is an acute angle or an obtuse angle, but because the 10 degree angle isn't an option, it must be the angle across from R, which is equal to 150 degrees.