Given word MATHS First we check Letter M, Letter M has no rotational symmetry. it has only vertical line of symmetry. Letter A has no rotational symmetry, it has only vertical line of symmetry. Letter T has no rotational symmetry it does not looks like same after rotation. Letter H has rotational symmetry.( Angle of rotation = 180º, 360º) Letter S has rotational symmetry. ( Angle of rotation = 180º, 360º) ∴ Two letters H and S have rotational symmetry.