The Golden Ratio is discussed at this site:
http://www.geom.uiuc.edu/~demo5337/s97b/art.htm
The Golden Section in Nature is discussed at this site:
https://www.goldennumber.net/nature/
There are many sites that discuss the relationship between math and art (that is between perspective and projective geometry). You … See the whole entry
A discussion some of the historical proofs of the Pythagorean theorem are listed.
http://www.cut-the-knot.org/pythagoras/index.shtml
These sites provide some information about the Great Pyramid.
http://discoveringegypt.com/pyramids-temples-of-egypt/pyramids-of-giza/
This site provides an introduction to similar triangles:
https://www.mathsisfun.com/geometry/triangles-similar.html
This interactive site demonstrates the similar triangle theorem:
http://www.mathwarehouse.com/geometry/similar/triangles/similar-triangle-theorems.php… See the whole entry
This site has practice with classifying triangles.
http://www.onlinemathlearning.com/types-of-triangles.html
This site investigates the exterior angles of a triangle:
http://www.freemathhelp.com/feliz-exterior-triangle.html… See the whole entry
An interesting introduction and discussion of angles is found on the site: http://www.mathsisfun.com/angles.html… See the whole entry
Euclid’s Elements can be found at:
http://aleph0.clarku.edu/~djoyce/java/elements/elements.html
These sites give some great examples of symmetry.
http://www.mcescher.com/?s=symmetry
Problem 1 presents an optical illusion. If you like this sort of problem you might enjoy checking out this site.
http://www.billiardworld.com/puzzles.html
You might be … See the whole entry
Here is some practice factoring trinomials using FOIL.
http://www.mathwizz.com/algebra/help/help3.htm
Here is some practice factoring difference of squares:
http://www.purplemath.com/modules/specfact.htm
This excellent Khan Academy site give extra practice in factoring:
https://www.khanacademy.org/math/algebra/polynomial-factorization/factoring-quadratics-1/e/factoring_polynomials_1… See the whole entry
This site considers the evaluation of polynomials.
http://www.purplemath.com/modules/evaluate.htm
This interactive site gives practice with Punnett squares.
https://www.palomar.edu/anthro/mendel/mendel_2.htm
This interactive site is excellent in giving practice solving linear equations with one variable.
http://www.hellam.net/algebra/linear2.html
This interactive site gives practice solving quadratic equations. It uses the quadratic formula, and if you input values for a, b, and c for which … See the whole entry
This interactive site gives practice solving linear inequalities:
http://www.algebralab.org/lessons/lesson.aspx?file=Algebra_OneVariableSolvingInequalities.xml… See the whole entry