Hey guys

Two perpendicular chords AB and CD of a circle, centre O, intersect at E. Prove that + = 180 degrees.

Could someone please help me? I can't seem to work this one out.

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- May 18th 2009, 11:54 PMxwrathbringerxCircle Geometry
Hey guys

Two perpendicular chords AB and CD of a circle, centre O, intersect at E. Prove that + = 180 degrees.

Could someone please help me? I can't seem to work this one out. - May 19th 2009, 03:08 AMGrandad