T
H
E

E
L
E
M
E
N
T
S
Book III   Proposition 10
For, if possible, let the circle ABC cut the circle DEF at more points than two, namely, B, G, F, H;

    let BH, BG be joined
and
    bisected at the points K, L,
and from K, L
    let KC, LM be drawn at right angles to BH, BG
and
    carried through to the points A, E.
Return to Propositions    Next Page