Objectives

• Identify lines of symmetry in figures and objects
• Draw figures with specified symmetry
• Recognize congruence in mirror images

Vocabulary

Here are the vocabulary works that are found in this lesson.

Line Symmetry

when a figure can be divided into equal halves that match.

Bilateral Symmetry

when a figure can only be divided into one equal half. This figure has one line of symmetry.

Lines of Symmetry

the lines that can be drawn to divide a figure into equal halves. Some figures have multiple lines of symmetry. Some figures have one line and some have no lines of symmetry.

Rotational Symmetry

When a figure rotated up to around a fixed point looks exactly the same as it did in the beginning.

Congruent

exactly the same size and shape