Find the measeurement of angle APC
Known
Line AP has a point B on it
Line PC has a point D on it
Lines AB and CD are the same length
Lines AB and CD are both Chords of a circle
The measurement of Arc ACD is 200 degrees
Point P is outside the circle
Is there enough information to determine the measurement of angle APC?

Answer by longjonsilver(155): please explain what "measurement of arc acd = 200 degrees" means since an arc will have a length, not an angle, so which angle do you mean?
Let me restate the problem as it was originally presented. The notes above are my interpertation of the problem. Hope this helps.
A circle with two secants that have a common end point that is outside of the circle. the end point is named p, the top secant is abp and the bottom secant is named cdp, ab and cd are congruent, the measurment of acd is 200 dedrees, so is cab. I need to find angle APC