4th Grade - Lines of Symmetry

Front

What is symmetry?

Back

Symmetry is when a shape can be divided into two identical halves that are mirror images of each other.

Front

What is a line of symmetry?

Back

A line of symmetry is an imaginary line that divides a shape into two identical parts.

Front

How many lines of symmetry does a square have?

Back

A square has 4 lines of symmetry.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

How many lines of symmetry does a triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

What is an example of a shape that is not symmetric?

Back

A shape like a scalene triangle is not symmetric because its sides and angles are all different.

Front

Can a shape have more than one line of symmetry?

Back

Yes, many shapes can have multiple lines of symmetry, like squares and rectangles.

Front

What is rotational symmetry?

Back

Rotational symmetry is when a shape can be rotated around a center point and still look the same at certain angles.

Front

Give an example of a shape with rotational symmetry.

Back

A star shape has rotational symmetry because it looks the same when rotated at certain angles.

Front

What is the difference between reflective and rotational symmetry?

Back

Reflective symmetry involves a line dividing a shape into mirror images, while rotational symmetry involves rotating the shape around a point.