Answer:
<1 = 112º
<2 = 68º (given)
<3 = 68º
<4 = 112º
<5 = 112º
<6 = 68º
<7 = 68º
<8 = 112º
Explanation:
Supplementary angles add up to 180º. Once you find the measure of <1 and <2, the bigger angle will always be the bigger number and the smaller angle will always be the smaller number from <1 and <2.
There's a better way to explain it but you would need to go to the basics of all angle rules.