Now comes the between subjects design, the AB design, the AB testing.

There's a protocell AB now in this system.

There's a protocell AB now in this system.

Now the area once again it's just this triangle which is one half AB plus this triangle which is another one half AB you add them together you just get AB, you just get AB

Now we also know that AB and CD are parallel

Now do I have any other ab squared terms here?

Now what does this simplify to? Well, I have an 'ab' and I'm subtracting an 'ab'. So, these two guys cancel out.

AB

AB

AB

AB

That looks like an ab again, plus ab.

Now AB is a transversal and BD and AC are the parallel lines

AB 3481.

AB Nine.

AB Good.

Ab Major

AB Yeah.

AB Indeed.

AB Absolutely.

AB 22.

AB 594.

AB 25.

59. AB

AB 529.

3481. AB

AB Yes?

321. AB

1947. AB

AB Thanks.

I wanna prove that segment AB, segment AB is perpendicular

We have a ab squared, we have a minus ab squared.

AB Seven? Seven?

AB 1824, OK.

Then AB BC

Volunteer 1369. AB

AB Yes? Good.

Oh, 722. AB

Yes. AB Yes?

AB That's three.

Audience May. AB

Audience April. AB

Yeah! AB Good.

So plus ab.

AB, you get slope AB times slope BC is equal to negative 1.