Plz what is the missing number 1,4,9,16 what is after 16 plz me fast you

Which elements in the set below are integers? 12, –3⁄4,√ 25 , –7, √ 5 , 14⁄7, 9 a. 12, √ 25 , –7, 9 b. 12, √ 25 , –7, 14⁄7, 9 c. –3⁄4, 25 , √ 5 ,14⁄7 d. 12, –7, 9

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

In a column proof the right column states your reasons