Answer:
the slope of the line y=8 is 0
Step-by-step explanation:
0
Answer:
10
Step-by-step explanation:
Add all of the numbers up and divide by the amount of numbers there are. You subtract for the negatives.
Answer:
1. equal
2. add to 180
3. equal
4. add to 180
Step-by-step explanation:
as 1 and 3 are linear pairs
2 and 4 are vertically opposite angles