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Sunday, October 31, 2010

Basic constructions in Geogebra

Construction of Rectangle

1.Segment AB
2.Perpendicular line to segment AB through point B.
3.New point C on the perpendiculr line.
4.Parallel line to segment AB through point C.
5.Perpendicular line to segment AB through point A.
6.Intersection point D
7.Polygon ABCD
8.Show interior angles of the rectangle.
9.Show length of the sides of the rectangle
10.Hide all the lines.
11.Save the construction.


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Monday, October 4, 2010

Trigonometric Functions

The word Trigonometry is derived from the greek words , 'Trigon' and 'Metron' and it means 'Measuring the sides of a triangle'. The subject was originally developed to solve geometric problems involving triangles. It was studied by sea captians for navigation, surveyor to map out the new lands, by engineers and others. Currently Trigonometry isused in many areas such as the Science of seismology , designing electric circuits, describing the state atom, predicting the heights of tides in the ocean, analysing a musical tone and in many other areas.

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Sunday, September 26, 2010

Wednesday, September 22, 2010

Tuesday, September 21, 2010

Sum of the interior angles of a Triangle
Sum of the interior angles of Polygons
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Thursday, August 26, 2010

IT@School Ubuntu 10.04 Installation (Notes)
IT@school Linux 3.2 version Installation (Notes)

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