I was given two diagrams and explanations.

Given:

Implies: and

Given:

Implies: and

Given:

Implies: and

Given;

Implies:

Given:

Implies:

Now I have to explain:

1. Why is equal to half of ?

2. Why is equal to half of ?

3. If , what can you say about and ? Why?

Like, I know the rules. I see the pictures, it's just there. It's always implied. Always the case. But I can't really EXPLAIN it or put it in words. It's so frustrating!

Any help is appreciated. Thanks!