Answer is 21 Work Shown: The diagram shows that JK = 12 and GF = 2.5*(JK) = 2.5*12 = 30 The midsegment HL will be the average of the two lengths it is parallel to. We'll add up the values and then cut the result in half HL = (JK+GF)/2 HL = (12+30)/2 HL = 42/2 HL = 21