Two circles meet at A and B. A chord CD of one circle is produced to meet the other circle at E and F so that CDEF is a straight line, as shown. The common chord AB is produced to meet the line CF at a point M between D and E. If M is the midpoint of CF and angle CAF=90 degrees, prove that AC?

Question

Ms. Sue · Answer

And yet another name! Prove that AC ???

becca · Answer

prove that AC//BD and AF//BE.