**Problem : **
Decide whether or not the triangle below is isosceles.

**Problem : **
Decide whether or not the triangle below is isosceles.

**Problem : **
Decide whether or not the triangle below is isosceles.

**Problem : **
If the perimeter of a triangle is 15, and two
of the side lengths are 3 and 8, can the
triangle be isosceles?

**Problem : **
Given: Triangle ABC is isosceles; angle A is 110 degrees; the length of side BC
is 6; the
length of side CA is 4. What is the perimeter of triangle ABC?