a isosceles triangle has at least 1 line of symmetry but only has 9 letters
Possibly an equilateral triangle
a straight line
That would be an isosceles triangle
here's one shape,issoleces triangle.(p.s hope i spelt it right!)
1 line of symetry
1
1
1
1
1
An equilateral triangle has 3 lines of symmetry whereas an isosceles triangle only has 1 line of symmetry and other triangles have no lines of symmetry.