T H E E L E M E N T S |
Book I Proposition 30 | |
For let the straight line GK fall upon them. Then, since the straight line GK has fallen on the parallel straight lines AB, EF, the angle AGK is equal to the angle GHF. [I.29] Again, since the straight line GK has fallen on the parallel straight lines EF, CD, the angle GHF is equal to the angle GKD. [I.29] |
||
Previous Page Return to Propositions Next Page |