How to draw axis of symmetry graphs nice and simple

Pretty simple axis of symmetry graphic drawing method is as follows:

With a ruler to draw a square, and then in the square to draw two diagonal lines, it is a find the object graphic, usually we can use a ruler ruler ruler protractor, etc. to draw an axisymmetric graphic, if you use the computer, you can use the illustrations inside the PPT software, then What, by rotating 90 degrees or 180 degrees rotation into an axisymmetric figure.

Axis symmetric graph of the introduction:

Axis symmetric graph must be folded along a straight line after the two sides of the line coincide with each other, the key to grasp the two points: a folded along a straight line, the second part of the two parts of the overlap each other. Center symmetrical figure is a figure around a point after rotating 180 ° with the original figure, the key is also to grasp two points: one is around a point of rotation, the second is with the original figure overlap.

The actual difference between the axisymmetric figure to fold like origami can be overlapped is axisymmetric; centrosymmetric figure only need to invert the figure to observe any changes, no change is centrosymmetric figure.

If a plane folded along a straight line, the line on both sides of the part can be overlap each other, this figure is called axisymmetric figure, the line is its axis of symmetry. In this case, we also say that the figure is symmetric about this line (into the axis). The key to determining whether a figure is axisymmetric or not is to see if the figure is folded in half along a straight line. Can the two sides of the figure completely overlap.