Question

please help me it late at night trying to catch up on my homework!
http://www.rmes.us/AngelUploads/Content/MAT201//_assoc/Content/G%20Images/u2m3q5.jpg
Use the Exterior Angle Sum Conjecture to find the measure of angle d.
A) 110°
B) 65°
C) 90°
D) 80°

Answer 1

very straightforward:

going CW from 90 degree
90
180-100=80
180-80=100
unknown=360-270=90

Answer 2

actually last line is false (but restatement is arbitrary):

unknown = 180-(360-270)=90

Answer 3

it C?

Answer 4

yes C) 90

Answer 5

AWW kk thank u! So much! u Guys it helps a lot!!!