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SAT Math 3.2 Geometry and Measurement 207 Views
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Description:
SAT Math 3.2 Geometry and Measurement
Transcript
- 00:02
Here’s your shmoop du jour, brought to you by vertical angles.
- 00:06
You have to figure their calves are starting to get pretty tired.
- 00:10
How many angles must be equal to the measure of angle 1?
- 00:13
And here are the potential answers…
- 00:16
Okay, so believe it or not, the key word in this problem isn’t “angle” or “measure” or even “equal.”
Full Transcript
- 00:22
It’s the word “must.”
- 00:24
The fact is, based on the information given, there are other angles that could be equal to 1…
- 00:28
…but we don’t know for sure. And why don’t we know for sure?
- 00:32
Because we’re never told that the two horizontal-ish lines are actually parallel.
- 00:36
They certainly look parallel, but we don’t want to go assuming that things are just as they appear.
- 00:41
That’s what got us in trouble at last year’s Christmas party.
- 00:45
The only angle we know beyond a shadow of a doubt has the same measure as angle 1 is angle 3…
- 00:51
…because the two are vertical angles. And by definition, vertical angles must have equal measure.
- 00:56
So our answer is most decidedly B – uno angle, por favor.
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