Friday, January 30, 2009
* "Transformations - Rotations"
Posted by Mayelin at 11:45 AM 0 comments
Monday, January 26, 2009
Poems & Proses.
I think that poems are better than proses because poems make words sing.
Poems bring excitement. I also think that poems are better because poems are short and it gets right to the point. However articles are very long and they aren't as interesting as they are in poems.
Posted by Mayelin at 9:35 AM 0 comments
Transformation- Reflections
A reflection is like a mirror image because it flips over, and it does not change in size nor shape only its location. You can reflect an image over the x-axis or y-axis without knowing the exact rules by imagining how it would look like on the other side. For example if you look at your hand and you flip it over, you just made a reflection. Just like when you look at yourself in in the mirror. The original figure and its reflection is exactly equal distance from the line of symmetry because the figure just flipped over. Therefore when a figure reflects the original and prime figure has to have equal distance. Yes i do think we could determine the line of symmetry if we were given the points of the original figure and the image. When looking at the two figures, i know which one is the transformed one because the transformed image's points are represented by a letter with an apostrophe.
Posted by Mayelin at 6:41 AM 0 comments
Wednesday, January 14, 2009
"Transformations - Dilations
Dilations-
A dilated figure can change in ONLY size and location NOT in shape ! Do you have a camera? Well if you do, notice that when you zoom into a photo the picture gets bigger, the size changes, and the location. Zooming into a photo can relate to dilations because when a dilate a figure it changes in size,and location. The way this works is by using a scale factor. A scale factor is a number used as a multiplier in scaling. If a figure undergoes a dilation with a scale factor of 1.5 it will get bigger because they way the scale factor works is "If the scale factors are greater than one, the figure will get larger. If the scale factors are less than one the figure will get smaller.'' For example, if the scale factor is 0.5 the figure will get smaller because 0.5 is smaller than one.
Dilations are different from translations because a translation only slides; it slides left, right, up or down the shape does change. However, in dilations the figure does change size and location. Multiplying by 1/3 is the same as dividing by 3 because since the inverse operation of multiplying is dividing, you can divide the number by the denominator.
Posted by Mayelin at 7:37 AM 0 comments
Monday, January 12, 2009
Transformations- Translations
When looking at the two figures i know that the transformed one is the figure in which the letters that represent the vertices's have a comma after the letter. For example A', B', C',D'.
The new points are called primes. The kind of words you can use to describe a translation are; A copy of a figure, or a sliding. A translated figure will NEVER change in size or shape because it is only sliding up, down, left, or right. You can translate a figure without a coordinate plane by subtracting the x or y axis by the coordinate points, depending on the location the figure is translating.
Posted by Mayelin at 11:27 AM 0 comments
