Name: Similar shapes & transformations
Uploaded: 2020-04-29T18:30:46.000Z
Duration: 2 min 38 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Basic passive voice

- [Instructor] We are told that Shui concluded

have four pairs of congruent corresponding angles.

What error if any, did Shui make in her conclusion?

Pause this video and try to figure this out on your own.

All right, so let's just remind ourselves

if you can map one figure onto the other.

But these sides KN and LM right over here,

So, and then if you try to dilate it down

so that the length of KN is the same as the length of HI

well then the lengths of KL and GH would be different.

So it doesn't seem like you could do this.

So it is strange that Shui concluded that they are similar.

Is the error that a rigid transformation, a translation

so the quadrilaterals are congruent, not similar.

Oh, choice A is making an even stronger statement

because anything that is congruent is going to be similar.

You actually can't have something that's congruent

And so, choice A does not make any sense.

So our deductive reasoning tells us it's probably choice B.

It's impossible to map quadrilateral GHIJ

but then segment IJ would look something like this,

so that the length of HI and GJ matched KN or LM,

then you're gonna make HG bigger as well.

So, you're never gonna be able to map them onto each other

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Similar shapes & transformations

figure

sense

shift

bit