Why are corresponding angles always congruent? - why are alternate exterior angles always congruent?
why aren't alternate interior angles supplementary?

Why are Corresponding angles always congruent? --> A postulate says this is true when two parallel lines are cut by a transversal. 

Why are Alternate exterior angles always congruent? --> A theorem says this is true when two parallel lines are cut by a transversal. 

Why aren't Alternate interior angles supplementary? --> A theorem says that when two parallel lines are cut by a transversal, then same-side interior angles are supplementary and same-side exterior angles are supplementary.

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3

76%

step-by-step explanation:

24% are dogs and the remaining is 76% because 100-24=76