Three friends all have ages that are consecutive integers. The sum of their ages is 57. What is the age of the oldest friend?
A. 20 years old
B. 21 years old
C. 19 years old
D. 18 years old

step-by-step explanation:

b). 4320 have a nice day

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

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