This model illustrates the most important properties and respects in any triangle.
A triangle can be determined as follows:  by a delineation (by using the mouse to change the triangle);  by three sides (by setting the numerical values each of the sides with the help of the respective scroll bar);  by two sides and one angle (by the scroll bars);  by one side and two angles (by the scroll bars).
In any event, regardless of the manner in which the triangle was determined, the numerical values of its sides and angles are displayed. In any triangle one can show: the inscribed circle and the circumscribed one, the altitudes, the bisectors, the medians. To do this you have to select the respective buttons.
You need to install ActiveX plugin to be able to view this model.
You can download it here.
