2nd Grade - Geometry: Symmetry

Front

What is symmetry?

Back

Symmetry is a property where a shape or object 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 that are mirror images of each other.

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 square have?

Back

A square has 4 lines of symmetry.

Front

How many lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of symmetry.

Front

Can a shape have no lines of symmetry? Give an example.

Back

Yes, a shape can have no lines of symmetry. An example is a scalene triangle.

Front

What is rotational symmetry?

Back

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

Front

How many lines of symmetry does an equilateral triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

What does it mean if a shape has bilateral symmetry?

Back

Bilateral symmetry means that the shape can be divided into two equal halves that are mirror images of each other.

Front

Is a line of symmetry always vertical or horizontal?

Back

No, a line of symmetry can be diagonal as well.