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### Point Symmetry

```
Date: 08/19/2001 at 02:24:35
From: tammy
Subject: Geometry

What exactly is point symmetry? How can one tell if point symmetry is
present?
```

```
Date: 08/19/2001 at 15:30:16
From: Doctor Sarah
Subject: Re: geometry

Hi Tammy - thanks for writing to Dr. Math.

You can read about point symmetry and study some good diagrams at the
New York State Regents Exam Prep Center:

An Intuitive Notion of Point Symmetry
http://regentsprep.org/Regents/math/symmetry/Psymmet.htm

Point symmetry exists when a figure is built around a single
point called the center of the figure. For every point in
the figure, there is another point found directly opposite it
on the other side of the center...

A simple test to determine whether a figure has point
symmetry is to turn it upside-down and see if it looks
the same. A figure that has point symmetry is unchanged
in appearance by a 180-degree rotation.

- Doctor Sarah, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
High School Definitions
High School Geometry
High School Symmetry/Tessellations
Middle School Definitions
Middle School Geometry

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