Find the area of an isosceles triangle if we know that 2 sides are 2 cm each, and the 3 side is 4 cm.

In each task, first of all – its legality, i.e., in other words, the possibility of the real existence of the described situation (figures, etc.). In this case, we can try to calculate the area of an isosceles triangle with the given parameters, but any formula will give us 0 in the answer.

The question arises: why? It’s about the inequalities of the triangles. T. to. the sum of the two sides does not exceed the length of the third side (2 + 2 = 4, a is not more), then such a triangle cannot exist and has no area.