How do the height and base length of the two triangles compare to the height and base length of the original piece of paper? the two dimensions are the same in the triangles as they were in the rectangle. the two heights are the same in the triangles as they were in the rectangle, but the bases of the triangles are half the length of the base of the rectangle. the two bases of the triangles have the same length as the base of the rectangle, but the triangles have heights equal to half the height of the rectangle. the two dimensions of the triangles are each half what they were in the rectangle.