Wolfram MathWorld is a good reference resource.

Thanks pi_cubed

]]>hi 666bro

You can read the master himself for free (pdf download)

http://farside.ph.utexas.edu/Books/Euclid/Elements.pdf

Bob

Hi, I'm also using another book called " a school geometry" by

SH Hall and FH Stevens. So my question is it okay to use more than one references to study geometry?

You can read the master himself for free (pdf download)

http://farside.ph.utexas.edu/Books/Euclid/Elements.pdf

Bob

]]>Any resources and suggestions always welcome.]]>