Answer:
The third exterior angle is 
Step-by-step explanation:
Given


Required
The third exterior angle 
The exterior angles of a triangle add up to 360 degrees.
So:

Make
the subject

Substitute known values


Answer:
yes
Step-by-step explanation:
The percentage is 85 percent
Answer:
(7.5, -1)
Step-by-step explanation:
hope this helps you!