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SYMMETRY

Surely you've ever heard of "symmetry", that some object whether or not symmetrical, and probably at school, in math class, you looked different axes of symmetry in figures.

However, this activity is just on symmetries.

is said that a figure is symmetrical if we can find an imaginary line that the court into two equal parts, or by placing a mirror in the middle of the figure, the reflection and half of the figure form the complete picture .

This activity is to create different shapes that are symmetrical, and also find and learn about other types of symmetries. This activity
need paper thin as paper and scissors comet.



First symmetry

The symmetry described the first is called bilateral symmetry or reflection symmetry.
Want to learn to cut shapes with reflection symmetry?

Well ...
First cut out a piece of tissue paper 20 x 20 inches or cut the paper into a square.

Now fold it in half as it will show in one of the two pictures.





Figure Think you want me to cut out, draw half that figure in one half of the folded sheet so that half of the drawing is at the part where it doubled sheet.
Here are some examples:

Cut out your picture by the bank and have a symmetrical, with reflection symmetry .

Decorate to your taste, and creates a lot more symmetrical figures.

Second symmetry

To find out what type of symmetry is the following, we first activity.
Cut a rectangle of tissue paper 40 x 20 cm.

Fold rectangle in half the long side, as shown in the drawing

Refold half the rectangle in exactly the same way and in the same way you did the first time. Look at the picture:

Draw the rectangle that was after making two folds.

Cut out your picture by the bank. It is important that folds is a some paper without cutting

You got a string of identical pictures, this is called translational symmetry , or flick it translate the first figure, you can match the others.

chain If you want to stay longer, just to make more bends in the paper before making your drawing, but remember, the folds should always ride in the same direction.