If The Perimeter Of Isosceles Triangle ABC Is 20 And The Length Of Side AC Is 8, What Is One Possible Value For The Length Of Side BC?

An isosceles triangle has two sides of equal length. Let the two unknown sides have measurement x.

perimeter= AB+BC+CA

20= x+ x+ 8

20= 2x + 8

2x = 20-8

2x= 12

x=6

So measure of side BC is 6.