Geometry Symmetry 1.5

Front

What is symmetry?

Back

Symmetry is a property where a shape or object can be divided into parts that are identical or mirror images of each other.

Front

What is line symmetry?

Back

Line symmetry, also known as reflection symmetry, occurs when a shape can be divided into two identical halves that are mirror images across a line.

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

What is the angle of rotation for a shape with rotational symmetry of order 2?

Back

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

Which letters of the alphabet have line symmetry?

Back

The letters A, H, I, M, O, T, U, V, W, X, and Y have line symmetry.

Front

What is the difference between line symmetry and rotational symmetry?

Back

Line symmetry involves reflection across a line, while rotational symmetry involves turning the shape around a point.

Front

How can you determine if a shape has line symmetry?

Back

To determine line symmetry, you can fold the shape along a line and see if both halves match perfectly.

Front

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

Back

An example of a shape with no line symmetry is a scalene triangle.

Front

What is the order of rotational symmetry for a square?

Back

A square has an order of rotational symmetry of 4.