Which of the following are necessary when proving that the opposite size for parallelogram are congruent? Check all that apply. A. Opposite sides are perpendicular.

B. Opposite sides are parallel.

C. Alternate interior angles are supplementary.

D. Alternate interior angles are congruent.

the answer is 15% decrease

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

answer: 800

step-by-step explanation: