### tonythetiger's growing post.

1. What is meant by the terms "

**rotation symmetry**" and "

**reflection symmetry**?" How does this relate to pentominoes? Explain these terms so that anyone who reads your post understands what you mean.

Rotation symmetry is a figure or object that can be rotated on its axis for more than one rotation and is not changed.

Reflection symmetry is a figure or object that is flipped or reflected like a mirror, but the reflected object is not unique.

Pentominoes are shapes made up of 5 squares, a total of 12 unique pentominoes can be made.

Pentominoes relate to rotation and reflection symmetry because anyway you rotate or reflect the pentominoe it will not turn it into a unique pentominoe.

2. Create a pattern. You must represent than pattern both pictorially(i.e. With a picture of diagram) and with numbers You must show the first 4 steps of your pattern.

3. Describe in words what is occuring with your pattern and if your pattern has an ending or if it continues indefinately. Make sure that your explanation is clear enough that the person reading your description could understand your pattern without seeing your diagram.

This shape is like the letter P. It starts as 3 vertical tiles and 2 more vertical tiles to the right of that. As you go on you add one tile to the bottom of the longer vertical part of the P and add 2 more to the side of the part the only has 2, and so on for the next three shapes. This pattern can continue on and on but wouldn't look much like a P after 6th or 7th shape.

4. Create a T-chart that shows what is happening with your pattern. You must show the first 4 steps of your pattern with the T-chart.

## 2 Comments:

Great job but does your pattern continue on indefinately.

Mr. R

Great job with the post and making the addition based upon my first comment. This post deserves 20/20

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