What is 'Lead Time' Lead time is the amount of time that elapses between when a process starts and its completion. Lead time is examined closely in manufacturing, supply chain management and project management, as companies want to reduce the amount of time it takes to deliver products to the market. The amount of time that elapses between when a process starts and when it is completed.  takes to deliver products to the market.
Quick Answer. A parallelogram is a quadrilateral having two pairs of opposite sides parallel to each other. To draw a parallelogram, make two lines that are parallel to each other and the same length, and then draw two more parallel lines of equal length connecting them into a four-sided shape. Continue Reading.
Yes, a rhombus is a quadrilateral with four equal sides. Drawing a diagonal divides it into two triangles, which are clearly congruent by SSS. So we get that corresponding angles of the triangles are congruent. If we then consider the diagonal to be a transversal, this implies that opposite sides are parallel.