The height of the prism is basically the distance between the two bases of the prism (triangles), that is, it is the line (or straight line) that connects the bases of the right triangular prism. Each triangular prism has 3 heights, whose lengths are identical to each other. In a right triangular prism, the height is equal to any lateral edge.

We use the height of the prism to calculate the volume of the prism, the area of the lateral surface, as well as the area of the total surface of the prism.