T H E E L E M E N T S |
Book I Proposition 34 | |
For, since AB is parallel to CD, and the straight line BC has fallen upon them, the alternate angles ABC, BCD are equal to one another. [I.29] Again, since AC is parallel to BD, and the straight line CB has fallen upon them, the alternate angles ACB, CBD are equal to one another. [I.29] |
||
Previous Page Return to Propositions Next Page |