You will now see the construction steps for a triangle whose three sides a, b and c are given. Just use the arrow keys in the worksheet to see one step after another.

Task:
Change the sliders for a, b and c. Watch the triangle change. For which values of a, b and c is no triangle possible anymore?
The triangle inequality says, that the sum of two side lengths of a triangle is greater than the length of the third side of the triangle. Check it for 3 (or more) values for a, b and c.