The length of DE is 2.5 units
Similar figures are two figures having the same shape
Given:
ΔABC and ΔDEF are similar.
then,
AB/ DE = BC/ EF = AC/ DF
Now, AB = AC = 5 units, BC= 6 units
AB/DE = BC/ EF
5 / DE = 6/ 3
15= 6 DE
DE = 5/2 = 2.5
Hence, the value of DE is 2.5 units.
Learn more about this concept here:
https://brainly.com/question/3217720
#SPJ2