00:01
Given that angle a equals 35 degrees and angle b equals 55 degrees, find the measurements of angle x and angle y.
00:16
So what we know about flat lines is they are going to need to equal to 180 degrees.
00:24
So a and y are both on the same flat line.
00:35
So a plus y is going to need to equal 180.
00:40
We know that a equals 35.
00:48
So 35 plus y equals 180.
00:58
Now we need to isolate y by itself.
01:01
So we're going to subtract 35 from both sides.
01:04
So 180 minus 35 means that angle y is equal to 145 degrees.
01:13
145 degrees.
01:23
And next we need to find angle x.
01:28
So angle x does not readily share any of these angles with a number.
01:36
So what we're going to do first is find out what the friend of b is.
01:45
I'm going to name this one z.
01:50
So for this, same concept as with angle a.
01:55
So our b, which is 55, plus z will need to equal 180...