I cannot answer questions about non-Euclidean geometry (that has been a while). I can answer trigonometry, coordinate geometry, proofs, algebraic geometry, transformations, constructions, 3d shapes, area, perimeter, points, lines, planes, angles (adjacent, vertical, ...), parallel and perpendicular lines, polygons, circles, and anything taught in a geometry class.
I have two years teaching experience in geometry; many years tutoring Geometry.
NEA, past NCTM, MAA, AMS, and ASCD
I have a B.S. in mathematics (and computer science), and went back for my teaching certificate (with more than enough hours for a minor in education).
Past tutoring at Sylvan Learning Center, Huntington Learning Center, and private tutor. I have responded to questions on answers.com but would prefer to volunteer with All Experts.