

Online Geometry Problem 830: Quadrilateral, Triangle, Angles, 30 degrees,
Congruence. Level: High School,
SAT Prep, College,
Mathematics Education

The figure below shows a quadrilateral ABCD
with AC = CD, angle BAD = 73 degrees, angle ADB = 34 degrees, and angle CBD = 30 degrees.
Find the measure of angle BDC. Try to use elementary geometry (Euclid's
Elements).







