For any shape to be asymmetric, the number of lines of symmetry for the shape should be 0.
B has 1 line of symmetry
F has 0 lines of symmetry
G has 0 lines of symmetry
H has 2 lines of symmetry
J has 0 lines of symmetry
L has 0 lines of symmetry
So, of the following letters F, G, J, and L are asymmetric.
(3 marks: 0.5 marks for the identification of each letter)