00:01
Okay, in geometry, like i said, like they say, uses a lot of shorthand notation.
00:09
So let's look at some more.
00:12
This one means it's shorthand for adjacent.
00:15
So this means we would use this when we want to refer to adjacent angles or adjacent vertices.
00:24
And it's just nice to be able to write in shorthand considering geometry has a lot of proofs.
00:29
And then you have this one, which is shorthand for complementary.
00:43
And if you notice it, it's kind of nice when you don't have to spell out the words all the way.
00:48
And then you have this notation.
00:50
And the thing to remember about this is it refers to ray a, b.
01:01
But a is the initial point and b is a point that it goes through...