1. Lines of Symmetry in a Square

A square has four lines of symmetry. These include two diagonal lines and two vertical and horizontal lines through the center.

2. Example of an Object with Radial Symmetry

A common example of an object with radial symmetry is a starfish. Its arms are arranged around a central point, allowing it to be divided into similar sections.

3. Rotational Symmetry vs. Reflectional Symmetry

Rotational symmetry occurs when an object can be rotated around a central point and still look the same at certain angles. Reflectional symmetry, on the other hand, means an object can be divided into two identical halves by a line (line of symmetry). For example, a butterfly has reflectional symmetry, while a flower can exhibit rotational symmetry.

4. Example of a Shape with No Symmetry

An example of a shape with no symmetry is an irregular triangle. Its sides and angles are different, so it cannot be folded or reflected to match any part of itself.

5. What is a Line of Symmetry?

A line of symmetry is an imaginary line that divides a shape into two identical halves. If you fold the shape along this line, both sides will match perfectly.