Yo sup??
The two triangles are similar by AAA property
In triabgle ABC and EDC
mB=mD=90
mC=mC (common angle)
mE=mA (corresponding angles : parallel lines property)
Therefore by AAA triangles are similar, hence we can say that
AB/DE=BC/CD
5/DE=8/24
DE=15 ft
Hope this helps.
