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Angle Measures Videos 13 videos
Unlike anything that enters the Bermuda Triangle, Exterior angles can be found—in more than one way. This video covers how to use the remote inte...
ACT Math 1.3 Plane Geometry 605 Views
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Description:
ACT Math: Plane Geometry Drill 1, Problem 3. What does Angle 15 measure in the given diagram?
Transcript
- 00:02
We are getting shmoopy with it.
- 00:04
In the following diagram lines A&B are parallel Plan C is perpendicular angle
- 00:09
four measures the 105 degrees what his angle 15 measure
- 00:13
Hear the potential answers...Pausing.
- 00:17
Well it just want to make sure we have a basic understanding of angles.
Full Transcript
- 00:21
In our diagram were only told the measure of angle 4
- 00:24
So how does that get us to 15? Well if we know about
- 00:28
vertical angle we should know that angle 7
- 00:32
the one opposite angle 4 is also 105 degrees
- 00:35
Next because we're told a and b are parallel we should realize that angle 7 and 15
- 00:41
would have the same measure.
- 00:43
So our answer is D.
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