How about an isosceles triangle which has one line of symmetry
a shape with a line of symmetry
The 2D shape which has one line of symmetry is the trapezium.
a triangle only has one line of symmetry
Not necessarily.
no
An isosceles triangle has one line of symmetry
square
An isosceles triangle
symmetrical
An isosceles triangle and a kite have only one line of symmetry.
A square
None.All shapes were at least 3 sides or more.