Shapes with one line of symmetry

Which option of shapes has only 1 line of symmetry ?

1. Semicircle, Kite, Isosceles triangle
2. Isosceles trapezium, Rectangle, Equilateral triangle
3. Circle, Semicircle, Parallelogram
4. Square, Isosceles triangle, semicircle

Answer

Option 1 : Semicircle, Kite, Isosceles triangle

Shapes with one line of symmetry