Answer:
A regular triangle has an order of rotational symmetry of 3 and three lines of symmetry.
A rhombus has an order of rotational symmetry of 2 and two lines of symmetry.
The order of rotational symmetry is the number of times a figure can be rotated by less than a full turn and still look the same.
The lines of symmetry are imaginary lines that divide a figure into two identical halves. In both cases, the number of lines of symmetry is equal to the number of sides.
Therefore, a regular triangle has an order of rotational symmetry of 3 and three lines of symmetry while a rhombus has an order or rotational symmetry of 2 and two lines of symmetry.