What same thing do you take away from equals?
From what equals do you take it away?
When you take the angle Blue from the adjacent angles Yellow, Blue, what is the remainder?
When you take the same angle Blue from the adjacent angles Blue, Red, what is the remainder?
What do you find true of the two remainders?
What axiom do you use?
Diagram 35.
OTHER METHODS OF DEMONSTRATION.
The adjacent angles Yellow, Green, are equal to what?