In his scholarly work,"The Legacy of Pharaonic Egypt," G. Mokhtar investigatesindividuals expanded the scope of their intellectual and technical abilities by contributingsignificantly to the following areas: astronomy, mathematics, and architecture.

Ancient Egyptians used astronomy for making their calendars, positioning the pryamids, andtelling time at night. Ancient Egyptians used astronomy in their calendars because there life revolved around the annual flooding of theNile. This resulted in three seasons, the flooding, the subsistence of theriver, and harvesting.Astronomy was also used inpositioning the pyramids. They were aligned very accurately, the eastern andwestern sides ran north and the southern and northern sides ran west.

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The pyramids were probably originally aligned by finding northor south, and then using the midpoint as east or west. This is because it waspossible to find north and south by watching stars rise and set. Ancient Egyptians also used astronomy to create acatalogue of the universe in which five constellations were recognized.They also were able to discover 36 groups of stars called decans. These decans allowed them totell time at night because the decans would rise 40 minutes later each night. The mathematics of Egypt, especially arithmetic and geometry,enabled Ancient Egyptians to be able to count the number of bricks that would be needed to build a pryamid.It also allowed them to find the area of a field, the volume of grain in a silo.Knowledge of arthimetic, algebra, and geometry also proved to be of great importantance in calculating the area of land eroded or added each year by flooding.

Probably the most famous architectural structure in all of Egypt, the pyramids are still one of the worlds best architectural achievement, even though they were built many centuries ago. These structures can be as tall as 482 feet (147 m) high. The Pyramid towers over ..