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SAT Math Videos 171 videos
SAT Math 1.1 Statistics and Probability. In which of the following data sets are the arithmetic mean and the median equal?
SAT Math: Statistics and Probability Drill 1, Problem 2. If the four largest numbers in the set were doubled, what would happen to the median...
SAT Math 1.3 Statistics and Probability. Approximately what is the probability that they will be placed in alphabetical order?
SAT Math 3.2 Geometry and Measurement 223 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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