Answer:

Step-by-step explanation:
We have a similarity of triangles. Once the side BC and ED are parallel,


Once 




C rational numbers
natural numbers are numbers like
1, 2, 3, 4 etc
whole numbers are numbers without a fraction or decimals (natural)
irrational is just bunch of random numbers
Answer:45 degrees
Step-by-step explanation:
360/8 sides =45
Factors of 18
If he has 1 friend, he gives 18 cookies
2 friends, 9 each
3 friends, 6 each
6 friends, 3 each
9 friends, 2 each
18 friends, 1 each
these are the common factors of 18. I don't know whether fractions are applicable here but I hope this helps.