Wednesday, November 3, 2010

Basic Constructions in Geogebra

Construction of Circumcircle of a Triangle

Draw a triangle and construct its circumcircle.

1.Using the Polygon tool construct triangle ABC.
2.Using Perpendicular bisector tool draw perpendicular bsectors to any two sides of the triangle.
3.Mark the intersecting point of the perpendicular bisectors which is the centre of the circumcrcle. ( Intersect Two Objects tool)
4.Choose the tool Circle with centre through point and click first at the centre, then at any vertex of the triangle.
5.Using the Move tool change the position of vertices.
6.Save the construction.