Volume of Pyramids and Cones
... Goal: Find volumes of pyramids. Goal: Find volumes of cones. Volume of a Pyramid: _________________________________________________________ V = ____________________ ...
... Goal: Find volumes of pyramids. Goal: Find volumes of cones. Volume of a Pyramid: _________________________________________________________ V = ____________________ ...
Dynamic Geometry Software not only for simple dragging
... (a) The constructions are precise and can be repeated quickly. Many relations can be seen directly and guide so the process of thinking. Subsidiary lines can be discovered by motions of parts of the figure. The imaginative faculty in general is too weak. DGS offers constellations that students can h ...
... (a) The constructions are precise and can be repeated quickly. Many relations can be seen directly and guide so the process of thinking. Subsidiary lines can be discovered by motions of parts of the figure. The imaginative faculty in general is too weak. DGS offers constellations that students can h ...
History of geometry
Geometry (from the Ancient Greek: γεωμετρία; geo- ""earth"", -metron ""measurement"") 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 (arithmetic).Classic geometry was focused in compass and straightedge constructions. Geometry was revolutionized by Euclid, who introduced mathematical rigor and the axiomatic method still in use today. His book, The Elements is widely considered the most influential textbook of all time, and was known to all educated people in the West until the middle of the 20th century.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.)