00:01
Okay, i've had kind of fun, a lot of fun with this problem trying to figure out what else going on.
00:05
So let's first start with your mid -segment rule.
00:11
If it's parallel, if these two are parallel, then this is x and then this is 2x.
00:20
So this segment is going to be parallel to ut.
00:25
So ut is going to be 26 .8.
00:32
Okay, which means that this piece is 13 .4, and this piece is 13 .4 because b is a midpoint.
00:44
Okay.
00:46
Now, that being said, this piece here is going to be two times.
00:53
So this piece right here is 26 .8.
00:56
This piece is 26 .8.
00:58
So the whole thing is going to be 53 .6.
01:06
Okay, so now our midpoint theorem says that these two are congruent.
01:15
So this is 26 .8.
01:17
Now, i know that this piece can't be 26 .8 because if it's 26 .8, if this piece here is 26 .8, it's got to be congruent to this, and that would make it equilateral.
01:28
But it's not equilateral.
01:30
And even more than that, i know that the perimeter of this triangle is 70 .4, i think it says.
01:37
And that what it says? 77 .6.
01:40
And if i multiply 26 .8 times three, that does not equal 77 .6.
01:48
So i'm going to take 77 .6, and i'm going to subtract 26 .8.
01:55
And that gives me 77 .6 minus 26 .8 gives me 50 .26 .8 gives me 50 .8.
02:09
Okay so these two together up and pt together equal 50 .8 so now i'm going to divide by two because i know that these two are congruent because of the mid -segment rule and it also tells me it's a so divide by two and that gives me 25 .4 so this piece is 25 .4 and this piece is 25 .4 okay i also know that because of the mid -segment rule these two are congruent so this this is 26 .8...