WELL BALANCED WELL BALANCED ARRANGEMENT OF PARTSARRANGEMENT OF PARTS

Line SymmetryEXIST WHEN TWO HALVES OF A FIGIURE

CAN BE MADE TO MATCH BY FOLDING ON A LINE

CVERTICAL HORIZONTAL

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ROTATIONAL SYMMETRYROTATIONAL SYMMETRY

EXIST WHEN A FIGURE CAN BE ROTATED LESS THAN 360 0 ABOUT A CENTRAL POINT CALLED THE POINT OF ROTATION

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Regular Polygons HaveRotational and Line Symmetry

RotationalRotational SymmetrySymmetry

1. Square2. Rectangle3. Pentagon4. Hexagon5. Octagon

What symmetry do the following polygons have?

1/3 or 120 0 symmetry

Equilateral triangle 90, 180, 72, 60, 45

SSymmetryymmetry

Is all around usIs all around uscut an apple in half cut an apple in half

and you will findand you will find

Rotational SymmetryRotational Symmetry

SSymmetry in nature ymmetry in nature

SSymmetry is found in nature,ymmetry is found in nature, just look around…

• Snow Flakes• Insects• Plants and flowers• Animals• Sea Life• Can you think of more….

Most Most animals animals

have have bilaterabilatera

l l symmetsymmet

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Line symmetry Rotational symmetry

Which letters of the alphabet have

•horizontal symmetry?•vertical line symmetry?•rotational symmetry

Does the font you use make a difference?

Print your full name in capital letters, what kind of symmetry can you find?

For more review click on the image

A

Your assignment…..You will design a quilt using a variety of rotational symmetric designs.You may use images from the internet or clip art.

Created with a compass