Monday, May 15, 2006

Growing Post-May 15

QUESTION #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.

my ANSWER: Rotation symmetry is when you can rotate (or turn) a figure around a center point by fewer than 360° and the figure appears unchanged.Reflection symmetry happens if a figure or object looks the same after being reflected in a mirror. This relates to pentominoes because there are only 12 unique ones. By unique I mean that there are no reflectional or rotational symmetries. Because if you do an L type shape then if you rotate it around then it won't be unique. It'll still be the same shape but just at a different way around.

*I think if you click on the picture it'll be bigger.

QUESTION #2: Create a pattern. You must represent this pattern both pictorially (i.e. with a picture or diagram) and with numbers. You must show the first 4 steps of your pattern.


In Step 1 there are 2 boxes.
In Step 2 there are 3 boxes.
In Step 3 there are 4 boxes.
In Step 4 there are 5 boxes.
[Is that how you describe it in numbers? Look at the BLUE parts.]

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

my ANSWER: In my pattern, it starts with 2 boxes and with each step, one box gets added. The pattern continues on indefinately.

QUESTION #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.


no stealing this picture! =3

post made by: [angelicM]

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