Question

Find the measure of the line segment DE.

A) 15

B) 13

C) 21
D) 18

Answer 1

A) 15

Explanation:

triangle DGF ~ triangle LEF

GF/EF=DF/LF

7/6=(4x-1+6)/(11+7)

7/6=(4x+5)/18

4x=16

x=4

DE=4*4 - 1=15