okay so angle 11 can be equivalent to angle 16,3, and 8 but they're probably looking for angle 3
angle 16 can be equivalent to 11, 3, and 8 but they're probably looking for 8
angle 6 is 90 degrees so anything that is also 90 degrees will equal 180 degrees
lines U and J are perpendicular
also I did this 2 years ago so it isn't hard just time consuming
hope this helps :)
