The figure below shows a quadrilateral ABCD
with angle BAD = 30 degrees, angle ADB = 98 degrees, angle BDC = 33 degrees, and
angle DBC = 76 degrees. If the diagonals intersect at E, find the measure of angle AED.
May I kindly request that you attempt to solve the problem
using only elementary geometry and refrain from using
trigonometry, if possible? Thank you for your cooperation.
