Question

select all the correct answers.
which figures have rotational symmetry?

Explanation:

A figure has rotational symmetry if it can be rotated by an angle less than 360° and match its original shape.

1. The first figure: Rotating it 90° around its center maps it to itself, so it has rotational symmetry.
2. The triangle: It is a scalene triangle, no rotation less than 360° will make it match its original form.
3. The third figure: It has an irregular top edge, no rotation less than 360° will make it match its original form.
4. The trapezoid: It is an isosceles trapezoid, but only has reflection symmetry; no rotation less than 360° will make it match its original form.
5. The hexagon: It is a regular hexagon, rotating it 60° (or multiples) around its center maps it to itself, so it has rotational symmetry.

Answer:

1. The top diamond-cross figure
2. The bottom regular hexagon figure