Can i get some help on this:)

Anyone know? will mark brainliest if correct!

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean