Learning Geometry

 

http://www.slideshare.net/muzzu1999/types-of-quadrilaterals-and-its-properties-group-4

http://www.math-prof.com/Geom/Geom_Ch_30.asp

http://www.mathopenref.com/vertex.html

http://mathworld.wolfram.com/VanishingPoint.html

https://www.mathsisfun.com/geometry/vertices-faces-edges.html

http://www.mathwords.com/l/lateral_surface.htm

http://www.mathsisfun.com/geometry/polyhedron.html

https://www.mathsisfun.com/geometry/prisms.html

http://www.mathopenref.com/prism.html

http://www.purplemath.com/modules/distform.htm

http://www.mathsisfun.com/geometry/interior-angles-polygons.html

http://www.mathsisfun.com/geometry/polygons.html

http://study.com/academy/lesson/what-is-a-polygon-definition-shapes-angles.html

https://eduplace.com/math/mathsteps/3/a/index.html

http://www.math.com/tables/geometry/polygons.htm

http://www.bbc.co.uk/schools/gcsebitesize/maths/geometry/polygonsrev6.shtml

https://www.mathsisfun.com/geometry/symmetry-reflection.html

http://www.icoachmath.com/math_dictionary/reflectional_symmetry.html

http://www.regentsprep.org/regents/math/geometry/gg3/lpoly2.htm

http://www.geom.uiuc.edu/~demo5337/Group3/tri2.html

http://www.mathsisfun.com/geometry/transversal.html

http://mathworld.wolfram.com/EuclideanSpace.html

https://www.mathsisfun.com/geometry/parallel-lines.html

http://mathforum.org/library/drmath/view/54706.html

http://www.coolmath.com/algebra/08-lines/04-what-is-slope-line-01

http://www.basic-mathematics.com/midpoint-of-a-line-segment.html

http://www.mathplanet.com/education/algebra-1/radical-expressions/the-distance-and-midpoint-formulas

http://www.regentsprep.org/regents/math/geometry/gp8/lparallel.htm

http://hotmath.com/hotmath_help/topics/perpendicular-transversal-theorem.html

http://www.biography.com/people/ren-descartes-37613#later-life-death-and-legacy

http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Descartes.html

https://www.mathsisfun.com/geometry/corresponding-angles.html

http://study.com/academy/lesson/corresponding-angles-definition-theorem-examples.html

https://www.mathsisfun.com/geometry/alternate-interior-angles.html