Monday, March 20, 2006

Alice in wonderland to Car Rims to the Overhead Projector . . .

Tribond time.
>Alice in wonderland0
>Car Rims
>Overhead Projector

answer?
Dilatations.


Dilatations are the transformations of shapes by making them BIGGER or smaller.
The text book Glossary puts it in a more simple way. The transformation that changes the size of an object.
Out of all honesty *sounds like something Uyen would say* , I find this a teensy bit easier than Rotations. Because, unlike Rotations. This concept uses a Mapping rule.
and that mapping rule is . . .
( x, y) ▬▬▬► ( kx , ky )
"k" being that SCALE factor
simply put the number of time you multiply the x & y coordinates by to get (x , y) Primed

Let's say we have
[ ▲xyz ]
and the coordinates for the triangle were
[x] = (-2 , 8)
[y] = ( 6 , 2)
[z] = ( 4, -2)
and the scale factor is " 2 " or we want it TWICE as BIG
we multiply the X & Y by 2. so the coordinates for
[ ▲xyz '] is . . .
[x'] = (-4 , 16)
[y'] = (12 , 4)
[z'] = ( 8 , -4)

try it on a grid . . .
[ ▲xyz ] is twice the size of [ ▲xyz ']

well, that's it for me. i gotta finish my map of atlantis. TAKE CARE ALL!!
KEEP IT RAWKING!

3 Comments:

At 8:34 PM, Blogger Danny T said...

Huh! Alice and the Wonderland!?!

 
At 9:28 PM, Blogger Ms. Armstrong said...

I love the tribond. Excellent connections within the topic.

 
At 5:33 PM, Blogger Arvin A. said...

yepp... alice in wonderland... see in the story, she chages shape like 3 times if im not mistaken. and dilatations is the changing of size..

 

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