2nd Grade - Geometry: Symmetry

Front

What is symmetry in geometry?

Back

Symmetry in geometry refers to a balance or correspondence between two halves of a shape, where one half is a mirror image of the 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 can you determine if a shape has a line of symmetry?

Back

To determine if a shape has a line of symmetry, you can fold the shape along a line; if the two halves match perfectly, that line is a line of symmetry.

Front

Can a shape have more than one line of symmetry?

Back

Yes, a shape can have multiple lines of symmetry. For example, a square has four lines of symmetry.

Front

What is an example of a shape with no lines of symmetry?

Back

An example of a shape with no lines of symmetry is a scalene triangle, where all sides and angles are different.

Front

What is an example of a shape with one line of symmetry?

Back

An example of a shape with one line of symmetry is a rectangle.

Front

What is an example of a shape with infinite lines of symmetry?

Back

An example of a shape with infinite lines of symmetry is a circle.

Front

How many lines of symmetry does a regular pentagon have?

Back

A regular pentagon has five lines of symmetry.

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 do you find the order of rotational symmetry?

Back

The order of rotational symmetry is found by determining how many times a shape fits onto itself during a full rotation of 360 degrees.