Answer:

Step-by-step explanation:
9. For the lines 'm' and 'n' to be parallel the sum of interior angles should be 180 degrees that is:


10. For the lines 'm' and 'n' to be parallel the alternate exterior angles should be equal that is:



11. For the lines 'm' and 'n' to be parallel alternate angles should be equal that is:

Solving for 'x' we get:



12. For the lines 'm' and 'n' to be parallel corresponding angles should be equal that is:




15/7 or 2 1/7 (same number but the first one is an improper fraction and the other is a mixed fraction)
The awnser to 60 x 20 is: 120
<h3>
Answer:</h3>

<h3>
Step-by-step explanation:</h3>
There are 6 possible options: 
There is 1 option out of those 6 that we are finding: 
Therefore, the probability is
.