Gourt > Kids and Teens > School Time > Math > Geometry
Geometry (Greek γεωμετρία; geo = earth, metria = measure) arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers. In modern times, geometric concepts have been generalized to a high level of abstraction and complexity, and have been subjected to the methods of calculus and abstract algebra, so that many modern branches of the field are barely recognizable as the descendants of early geometry. (See areas of mathematics and algebraic geometry.)
Early geometry
The earliest recorded beginnings of geometry can be traced to ancient Egypt (see geometry in Egypt), the ancient Indus Valley (see Harappan Mathematics), and ancient Babylonia (see Babylonian mathematics) from around 3000 BC. Early geometry was a collection of empirically discovered principles concerning lengths, angles, areas, and volumes, which were developed to meet some practical need in surveying, construction, astronomy, and various crafts. Among these were some surprisingly sophisticated principles, and a modern mathematician might be hard put to derive some of them without the use of calculus. For example, both the Egyptians and the Babylonians were aware of versions of the Pythagorean theorem about 1500 years before Pythagoras; the Egyptians had a correct formula for the volume of a frustum of a square pyramid; the Babylonians had a trigonometry table. More on [ Geometry ]
Studyin for geometry
jnick219 (Jeremy Collins) Tue, 22 Dec 2009 04:21:24 -0000
Studyin for geometry
Just beat my Geometry Wars 2 Pacifism Score. It's now 89,185,400!
EatFireHazard (EatFireHazard) Tue, 22 Dec 2009 04:17:11 -0000
Just beat my Geometry Wars 2 Pacifism Score. It's now 89,185,400!
@BionicBagel damn you and your Geometry Wars scores!!!!! :P
EatFireHazard (EatFireHazard) Tue, 22 Dec 2009 04:16:36 -0000
@BionicBagel damn you and your Geometry Wars scores!!!!! :P
@Jordan_Myers12 In that order? Cuz if so, then no. :( I got Economics, Geometry, American Gov. and English III. And C lunch.
TheyCallMeSean (Sean Taylor) Tue, 22 Dec 2009 04:16:09 -0000
@Jordan_Myers12 In that order? Cuz if so, then no. :( I got Economics, Geometry, American Gov. and English III. And C lunch.
@TheyCallMeSean Idk, I have Geometry, Spanish II, English III, and American Gov't.
Jordan_Myers12 (Jordan A. Myers) Tue, 22 Dec 2009 04:13:57 -0000
@TheyCallMeSean Idk, I have Geometry, Spanish II, English III, and American Gov't.
Without geometry, life is pointless.
LowellChurchill (Lowell Churchilll) Tue, 22 Dec 2009 04:06:28 -0000
Without geometry, life is pointless.
Areas, Volumes, Surface Areas - Use these simple illustrated formulas to calculate volume and surface area of various shapes.
Brain Teasers: Geometry Puzzles - Slice and complete various figures to form requested shapes.
Meta Description: [ Slice and complete various pictures (dissection geometry puzzles). ]
Cynthia Lanius' Lessons: Geometry Online - Have fun learning through activities about polygons, triangles, circles, and the volume of cylinders. Page includes an historic timeline, SAT type quiz, and glossary of terms.
Meta Description: [ Mathematics lessons for elementary,
middle, and high school including geometry. ]
Figures and Polygons - Shows different types of straight-sided shapes with up to ten sides. Gives the total number of degrees for each side.
Meta Description: [ Introduction to figures and polygons. Brought to you by Math League Multimedia. ]
Fugues of the Well-Tempered Clavier - Interactive Director movie comparing a fugue by Johann Sebastian Bach to a Möbius strip.
Geometria - A program for computing lines, surfaces and volumes of the main plane and solid figures, through direct and indirect formulas. Includes multiple languages.
Geometry - Games, illustrations, and definitions.
Meta Description: [ Fun math related puzzles and problems! Cool geometry stuff! Great for kids, big kids and really big kids! Teachers too! ]
Geometry - Explains and describes geometric terms, measurement of angles, types of figures, coordinate graphs, areas and volumes.
Meta Description: [ Basic geometry terms and help. Brought to you by Math League Multimedia. ]
Geometry from the Land of the Incas - Presents problems involving circles and triangles, with proofs, SAT practice quizzes and famous quotes. Also, has examples of geometry in Peruvian culture.
Meta Description: [ Geometry from the Land of the Incas, problems involving circles and triangles, with animated proofs. Antonio Gutierrez. Inca City on Mars Nasa. Also Cuzco, Lost City of the Incas, Machu Picchu, Inca Trail, Incan Quipu, Nazca Lines, Lord of Sipan, Peru. Travel. ]
Introduction to the Works of Euclid - Covers the life of Euclid and a discussion of Euclidean geometry.
Point Out the View - Use visualization to determine how four different people see a set of 3-D blocks. From PBS Kids.
Spaceship Builder - Use a virtual geoboard to help Dr. Marbles design a new fleet of cyberspace ships. From PBS Kids.
Tangrams - Choose a puzzle, then click and drag virtual tangram pieces to solve it. From PBS.
Teen Math Whizzes Go Euclid One Better - Features a discussion about the works of two teenagers, David Goldenheim and Daniel Litchfieldm, from Connecticut. They helped find a solution that eluded Euclid in finding a method to partition a line into any number of equal sections.
The Everlasting Pi - The history, uses,and creator of pi and also some fun facts, jokes and songs.
The Pythagorean Theorem Lesson - A lesson on the pythagorean theorem with the objective that the you will discover for yourself the actual theorem.
Meta Description: [ A lesson on the pythagorean theorem with the objective that the student discovers or figures out by him or herself the actual theorem. ]
Tim's Triangular Page - Learn about the basic properties, formulas, theorems and different types of triangles. Includes proofs and illustrations.
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