Triangles ABC and KRN are equilateral and AB = KP. Find KH if BC = 5cm

To answer the question posed, one should use the general rules, formulas and hypotheses known in mathematical science, which make it possible to determine the sizes of the sides of geometric figures represented by triangles. Taking into account the properties of equilateral triangles, based on the initial data presented in the problem statement, for the case under consideration, we obtain:

Due to the fact that the triangles, according to the original assignment, are equilateral, the angles and sides of these triangles are equivalent:

KN = 5cm.