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Sky Typing. http://robertkaplinsky.com/work/skytypers/. Plot points & Make a list of ordered pairs for each letter: M – A – T – H –. Would this message look different if you were viewing it from a plane above the message instead of on the ground?. UH OH –

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sky typing

Sky Typing

http://robertkaplinsky.com/work/skytypers/

slide4

Plot points & Make a list of ordered pairs for each letter:

M –

A –

T –

H –

Would this message look different if you were viewing it from a plane above the message instead of on the ground?

slide5

UH OH –

The message was supposed to be read horizontally from east to west instead of vertically from north to south.

slide6

UH OH –

The message is too small. It needs to be 50% larger!

slide7

UH OH –

This is a message for Los Angeles and they can’t see it well because it’s a few miles away. It needs to move 3 units west and 10 units north.

slide8

We’ve moved it!

Now how do we tell the computer to move from the original points to the finished points in ONE algebraic command?

algebraic transformations
Algebraic Transformations
  • Reflection across the x-axis
  • 90 Clockwise Rotation about the origin
  • 50% larger Dilation
  • Translation 3 units left, 10 units up
  • One transformation to tell the computer in ONE step
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