Question 1113548


*[illustration isos.png].

MA is parallel to PC
and  
AC is the transversal

Therefore CAM = angle ACP  ( alternate angles)

MA is parallel to PC
and  
BP is the transversal

BAM =APC  ( corresponding angles)

But BAM = CAM =a

therefore APC = ACP

Therefore CAP  is an isosceles triangle

hence AP = AC