Answer:
14. A
15. A
16.
17. B
18. always
19.sometimes
20. never
Step-by-step explanation:
14. internal angles must equal 360
a+b+36+113=360
a+b=211
the only one that equals 211 is a
we can see that a>b
therefor the answer is a (a=144 and b=67)
15. ((2n-2)+(4n+6))/2 = n+12
(6n+4)/2 = n+12
3n+2=n+12
2n=10
n=5
**I am not completely sure if this is right, I would try to check it if I were you**
16. it is a quadrilateral, so the interior angles must equal 360 again
angle1 + angle2 + 110 + 98 = 360
angle1+angle2= 360-208
angle1+angle2=152
there are only two answers that add up to 152, so we know the answer will be c or d
17. we know that angle1 is equal to 90 because the lines are perpendicular
angle2 is 20° because the perpendicular lines cut the angle in half, which means both at the bottom will be 20
this realization results in you getting b as the answer
18.always
19. sometimes
20. never
