<p>Hi! I was wondering if any of you know of any challenging high school Geometry textbooks or books I can buy to help supplement my class! I'm using the Moise and Downs geometry textbook and I find it a bit lacking. Thanks! :)</p>
<p>Do Khan Academy… If you think geometry is too easy, just learn some trigonometry or precalc on your own time.</p>
<p>Geometry is quite basic. There’s no need to work yourself up about the class to the point where you’re buying multiple textbooks.</p>
<p>AoPS “Introduction to Geometry” is fairly challenging compared to the regular curriculum…it includes many problems from MATHCOUNTS and AMC competitions.</p>
<p>Geometry is not a very challenging course</p>
<p>Second AoPS
^Masterball, actually it can be.</p>
<p>If you’re in the mood for a non-AoPS book, go with “Geometry for Enjoyment and Challenge.” It’s a very stimulating and rigorous book compared to other Geometry textbooks, in my opinion (Definitely not as rigorous as AoPS though, but a good book nonetheless.) Starts off slow but gets much harder by the end. It’s a very proof-oriented book though, so if you enjoy proofs, go for it.</p>
<p>I also use “Challenging Problems in Geometry” by Posamentier and Salkind.</p>