http://themathforum.forumotion.com/geometry-f6/-t1.htm Mon, 15 Sep 2008 02:32:39 GMT 10 http://www.cyneer.com/nxtwiki/uploads/Main/favicon1.ico http://themathforum.forumotion.com/geometry-f6/-t1.htm http://themathforum.forumotion.com/geometry-f6/spam-t122.htm spammer ]]> Geometry Mon, 15 Sep 2008 02:32:39 GMT http://themathforum.forumotion.com/geometry-f6/spam-t122.htm#610 http://themathforum.forumotion.com/geometry-f6/spam-t122.htm http://themathforum.forumotion.com/geometry-f6/simple-problem-t89.htm AIME15
Source: 2006 State Chapter Mathcounts]]> Geometry Thu, 21 Aug 2008 16:02:33 GMT http://themathforum.forumotion.com/geometry-f6/simple-problem-t89.htm#479 http://themathforum.forumotion.com/geometry-f6/simple-problem-t89.htm http://themathforum.forumotion.com/geometry-f6/proof-that-a-triangle-has-180-degrees-t10.htm Dojo We take as a fact that a circle has 360 degrees, the definition of degree. Let us take a arbitary triangle as above. We draw the incircle and the incenter, conected to the vertices: We now have three triangles: The sum of three triangles, with each triangle as x is 3x. Now notice the big triangle is the the three little triangles minus the inner circle, or 360. Geometry Wed, 13 Aug 2008 23:29:18 GMT http://themathforum.forumotion.com/geometry-f6/proof-that-a-triangle-has-180-degrees-t10.htm#16 http://themathforum.forumotion.com/geometry-f6/proof-that-a-triangle-has-180-degrees-t10.htm http://themathforum.forumotion.com/geometry-f6/simple-geometry-formulas-t6.htm AIME15
Area of square: s^2, where s is the side of the square.

Area of rectangle: l*w, where l and w are the two sides.

Area of parallelogram: b*h, where b is the base and h is the height.

Area of triangle: 1/2*bh, where b is the base and h is the height.

This should start you off.]]> Geometry Wed, 13 Aug 2008 21:46:06 GMT http://themathforum.forumotion.com/geometry-f6/simple-geometry-formulas-t6.htm#7 http://themathforum.forumotion.com/geometry-f6/simple-geometry-formulas-t6.htm