marsha was completing the steps for a parabola that has a focus at (5,-2) with directrix at y=-3 complete the missing steps below

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true

umm you say your want to . but you do know that this is the mathematics.  

o~o

the equation is going to be