Why do the ancient Egyptians use the pyramid shape..?

The tombs built for ancient Egyptian kings are known as 'pyramids'. Actually, the Egyptian themselves called these tombs 'Mer'. However, since these tombs looked a bit like a pointy topped wheat cakes, the Greeks used the word 'pyramids' to describe them, for 'pyramis' means 'wheat cakes' in Greek. The word 'pyramid' comes from 'pyramis'.

Do you know what is a pyramid shape is..? It is a figure which has four triangular sides that meet at a common point. No one knows exactly why the Egyptians built their tombs in the shape of a pyramid. However, there are many explanations given. Some people feel that pyramid shape represents a hill called "Ben-Ben". It was the first land to ever appear, and it rose out of the water at the beginning of time. Another explanation is that the pyramid shape was used because it had a sloping side that allowed the dead pharaoh to climb up to the sky, and live forever. Other feel that the pyramid represents the rays of the sun. What do you think..?