18- answer is 120
to find this:
first find the remaining angle in ABF
180-(55+40)=180-95=85
F has two angles. if F1 is 85 F2 is 85,too.(coterminal angles)
now you can find the interior angle of CDF
180-(35+85)=180-120=60
the you should find the exterior angle(exterior angle + interior angle =180)
180-60=120
x=120
20
x=48
y=82
ABC is parallel to EF
so to find x: 180-132=48
and for y:
180-((180-130)+48)=180-(50+48)=180-98=82
hope this helps
