Given a circle with chords AB and BC, with acute angle ABC and let D be a point on the circle with chord AD perpendicular to chord BC. Let E be a point on the circle so that chord DE is parallel to chord BC. 

Prove that angles EAC and ABC are complementary. 

What is the relationship if angle ABC is obtuse? right?

Answer rating: 100% (QA)

To prove that angles EAC and ABC are complementary well use the properties of circles and the relati... View the full answer