T
H
E

E
L
E
M
E
N
T
S
Book VI   Proposition 20
Let
    BE, EC, GL, LH be joined.

Now, since
    the polygon ABCDE is similar to the polygon FGHKL,
    the angle BAE is equal to the angle GFL;
and,
    as BA is to AE, so is GF to FL. [VI.Def.1]

Previous Page    Return to Propositions    Next Page