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TSI Math: Understanding How Dilation Affects a Shape's Perimeter 1 Views
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Description:
The triangle shown above is dilated by a factor of 3. What is its perimeter after the transformation?
Transcript
- 00:02
Okay sy mash members we've got a lovely little triangle
- 00:05
for you here and it's a special ones you khun
- 00:07
tell We got eight and then sixteen sixteen so it's
- 00:09
i sasa lease and a couple other things alright question
- 00:12
The triangle shown above is dilated by a factor of
Full Transcript
- 00:14
three Yeah it's giving birth What is its perimeter After
- 00:18
the transformation Perimeter after dilation Well if we drew a
- 00:27
triangle on a balloon and inflated it the triangle would
- 00:30
be stretched out which essentially what happens with a dilation
- 00:35
tried out Just don't get blue in the face from
- 00:38
blowing up the balloons In this case strangles dilated by
- 00:40
a factor of three which means all sides become three
- 00:43
times as long was multiplying All three right so three
- 00:46
times sixteen forty eight three times sixteen Still forty eight
- 00:49
three times eight is twenty four right so we could
- 00:52
just add all those up or if we were a
- 00:54
little bit more clever we could have just added the
- 00:56
sixteen sixteen to thirty two and a that's forty Multiply
- 00:59
it by three and you get one twenty and that's
- 01:01
it The answer is c as in the simulator we
- 01:04
came we shmoop
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