line segment ST contains points cap s times open paren A comma b close paren and cap t times open paren c comma d close paren Which formula should be used to find the midpoint of the segment?
Answer
A
open paren the fraction with numerator A plus b and denominator 2 comma the fraction with numerator c plus d and denominator 2 close paren
B
open paren the fraction with numerator A plus c and denominator 2 comma the fraction with numerator b plus d and denominator 2 close paren
C
open paren the fraction with numerator A minus b and denominator 2 comma the fraction with numerator c minus d and denominator 2 close paren
D
open paren the fraction with numerator A minus c and denominator 2 comma the fraction with numerator b minus d and denominator 2 close paren