A right triangle has legs of known lengths 2L and h. Find the length of the line segment x which is parallel to side h. Explain your reasoning.
A triangle in which one of the sides makes an angle of 90 degrees is called the right angle triangle. Three lengths of the right angle triangle are base, altitude, and hypotenuse. Various types of triangles are
(a) Right-angled triangle
(b) Isosceles triangle
(c) Equilateral triangle