${\displaystyle x}$     ${\displaystyle y}$ ${\displaystyle m}$ ${\displaystyle y^{\prime }}$     ${\displaystyle x^{\prime }}$

${\displaystyle y}$ ${\displaystyle x}$ ${\displaystyle y^{\prime }}$   ${\displaystyle x^{\prime }}$

N.B. In each Question, a small Diagram should be drawn, for ${\displaystyle x}$ and ${\displaystyle y}$ only, and marked in accordance with the given large Diagram: and then as many Propositions as possible, for ${\displaystyle x}$ and ${\displaystyle y}$, should be read off from this small Diagram.

1. 0
   	0	0
   	1
   0

2. 	0	1
   	0

[See p. 72]