Question 8:
m<1 = 148 degrees
m<1 = m<2 Alternate angles in parallel lines
m<2 = 148 degrees
m<3 = 180 - m<2 Supplementary angles/angles on a straight line = 180
m<3 = 180 - 148
m<3 = 32 degrees
Question 7:
Sum of interior angles of a triangle = 180 degrees
Using that information determine angle C
Then use supplementary angles or angles on a straight line to determine D (exterior angle)
I hope question 7 makes sense :)
