H
E
E
L
E
M
E
N
T
S
the angles BAE, AED have also been bisected by the straight lines FA, FE respectively.
Therefore
the angles at the vertices of the pentagon are bisected by the lines joining them to F.
Now
let FG, FH, FK, FL, FM be drawn from the point F perpendicular to the straight lines AB, BC, CD, DE, EA.
