a shape with a line of symmetry
The 2D shape which has one line of symmetry is the trapezium.
An isosceles triangle has one line of symmetry
square
How about an isosceles triangle which has one line of symmetry
no
Not necessarily.
An isosceles triangle and a kite have only one line of symmetry.
a triangle only has one line of symmetry
An isosceles triangle
symmetrical
A square