

Online Geometry Problem
1172: Cyclic Quadrilateral, Circle, Secant, Triangle,
Similarity, Metric Relations. Level: High School, Honors Geometry, College,
Mathematics Education
< PREVIOUS PROBLEM 
NEXT PROBLEM >

In a cyclic quadrilateral ABCD, AB =
a, BC = b, CD = c, and AD = d. AB and DC extended meet at E (see
the figure). If BE = x, prove that







