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SAT Math 6.2 Geometry and Measurement 173 Views


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Description:

SAT Math 6.2 Geometry and Measurement 

Language:
English Language

Transcript

00:02

Here’s your shmoop du jour, brought to you by segments.

00:06

For an added challenge, try to solve it while riding a segway. It’s just a seg-gestion.

00:13

If AC = CE and AB = DE, then BC is equal to which of the following?

00:20

Here are the potential answers...

00:23

All righty…so we’ve got this line…which appears to be some sort of subway map…

00:27

…and we’re sitting inside, wondering how long it’s going to be to take us to get from Street B to Street C.

00:33

So to solve this one, we’re going to have to think of certain segments in terms of other segments…

00:39

For example, we don’t know the length of BC…

00:41

…but we do know, just by looking at the diagram, that it’s equal to AC minus AB.

00:47

Because AC is equal to CE…

00:49

…and AB is equal to DE…

00:51

…we can also conclude that BC is equal to CE minus DE.

00:56

Well, using the same logic we used in the first place, CE minus DE is the same as length as CD…

01:02

…so BC is equal in length to CD…

01:05

…which is choice B and we're done.

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