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# Symmetry In The World Around Us PowerPoint PPT Presentation

Symmetry In The World Around Us. Created By: M. Mount. What Do All Of These Objects Have In Common?. …THEY ALL HAVE SYMMETRY!. WHAT IS SYMMETRY YOU ASK?. Some shapes can be folded in half to make both sides of the fold look the same. These shapes are called symmetrical shapes.

Symmetry In The World Around Us

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## Symmetry In The World Around Us

Created By: M. Mount

### …THEY ALL HAVE SYMMETRY!

• Some shapes can be folded in half to make both sides of the fold look the same.

• These shapes are called symmetrical shapes.

• The line that is left in the middle when you fold the shape is called the line of symmetry.

• Not all shapes have a line of symmetry. Some shapes have more than one line of symmetry.

• We are going to fold some shapes to find out if they are symmetrical.

### Symmetry is:

• n 1: (mathematics) an attribute of a shape; exact correspondence of form on opposite sides of a dividing line or plane [syn: symmetricalness, correspondence, balance] [ant: asymmetry] 2: balance among the parts of something [syn: proportion] [ant: disproportion]

Brought to you by:

http://dictionary.reference.com

### First Graders Should Be Able To:

• Identify symmetrical objects and their lines of symmetry.

• Use multimedia resources to explore patterns, symmetry, and shapes.

• Apple

• Orange

• People

• A chair

• Baseball cap

• Ball

• A nose

### Which Letters of the Alphabet have Symmetry?

• A B C D E F G H I J K L M N O P Q R S T U V W X Y & Z?

### Here are the correct answers!

• A, B, C, D, E, H, I, K, M, O,T, U, V, W, X, Y