Answer:
They create supplementary angle pairs.
Step-by-step explanation:
Supplementary angles add up to 180°.
Step-by-step explanation:

Answer: The answer would be No, Yes, No.
Step-by-step explanation:
Look at the grid, you can see that it has 100 units in all.
0.42 equals 21/50, so they are both wrong. The denominator would have to be 100. The only logical one would be the second one.