The "pyramid diagonals" are among the most accurate of all the alignments linked with the Great Pyramid. The diagonals of the Great Pyramid are lines traced between the exterior corners of four "sockets" that encircle the pyramid. Each of these lines divides the surface of the pyramid into **two identical and equally sized parts**. The measurements along these lines provide very accurate estimates of phi (phi), the mathematical constant equal to 1.61803398.... This is one of several numbers that cannot be expressed as a simple fraction (fractional ratio) of integers (whole numbers).

The Great Pyramid's diagonal measures approximately 220 feet (67 m). Because the apex stands at height 493.49 feet (149 m), this means that the base of the pyramid is about 8,100 square feet (750 sq m).

This is more than enough space for two rooms with a combined area of more than 8,000 square feet (740 sq m). But the pyramid was not built as a house for Pharaoh Khufu; it is almost three times as large as the largest known Egyptian temple. The purpose of the pyramid is much more mysterious: It could be a place to worship God or contain pharaoh's body after death. Some scholars have suggested that the pyramid may have been used as a giant antenna during ancient Egypt's period of technological advancement when it was a center of astronomy.

Isn't the Great Pyramid of Giza's foundation square? No, not exactly. Contrary to **popular belief**, the Great Pyramid is an eight-sided building, not a four-sided construction. From base to tip, each of the pyramid's four sides is evenly separated by extremely tiny concave indentations. The edges are smooth with **no straight lines**.

In fact, the Great Pyramid is the only non-square structure ever built with such precision that its dimensions could be used today in reconstructing the world's first giant monument. The pyramid is 208 feet (62 m) tall and has a base that is nearly 508 feet (152 m) on **each side**. It weighs **approximately 2.3 million pounds** (1 million kg).

The pyramid was built as a tomb for King Khufu, who reigned from 2589 to 2566 B.C. It was designed by his son, Prince Imhotep, and built under Khufu's supervision. The king wanted to show that he was more powerful than any king before him, so he ordered the construction of a great pyramid to honor himself after he was dead. The Great Pyramid was not the first pyramid built in Egypt. There are several others that date back even further. But none of them compare to the size of the Great Pyramid.

Khufu died while his project was still under way. His wife took over the government from there on, but she didn't live very long.

How steep is it? Each side of the Great Pyramid rises at a 51.5-degree inclination to the summit. Furthermore, each of the sides is virtually precisely aligned with the real north, south, east, and west. This means that when the sun is in the sky and its rays strike the four faces of the pyramid at nearly the same time, those rays will form an angle of 90 degrees - which is why the stones are so close together.

There are some assumptions being made here, but this should get you started in **the right direction**. The rates we used can be found in any good geometry textbook.

A pyramid is a polyhedron with **a polygonal base** and triangles on all of **its lateral faces**. When the lateral faces are congruent triangles, the shape is known as a "right pyramid," since the apex—the vertex where the lateral faces meet—is immediately above the center of the base. Otherwise the shape is called a "left pyramid."

There are two types of right pyramids: regular and irregular. A regular right pyramid has equal sides and equal angles. An irregular right pyramid has unequal sides and angles. Left pyramids are also divided into two types: regular and irregular.

In mathematics, a pyramid is a three-dimensional figure whose top surface is a polyhedron. This structure can be either hollow or solid. In both cases, the bottom surface is a polyhedron as well. Thus, a pyramid has **two polyhedral surfaces** and one polyhedral edge connecting them. Pyramids are important elements in masonry and architecture; they provide stable support for ceilings and roofs. They can also be used as containers for **precious items** such as jewels and minerals.

In physics, a pyramid is any geometric solid having identical vertices and edges, but different faces. The term is applied particularly to solids having an equilateral triangle as a fundamental building block. Such solids include the cube, octahedron, dodecahedron, and tetrahedron.

A pyramid is a polyhedron built by connecting **a polygonal base** with a point termed the apex in geometry. A lateral face is formed by **the base edge** and apex of each triangle. It has a polygonal basis and is a conic solid. A pyramid has n + 1 vertices, n + 1 faces, and 2n edges with **an n-sided base**. The apex of the pyramid is often labeled as such to distinguish it from other points within the polygon.

The lateral surface of a pyramid is called its (exterior) face and the two opposite and parallel sides between any vertex and the center of the base are called its (interior) edges. The remaining four sides are called its (interior) corners.

The word "pyramid" comes from Greek pyros meaning fire and daimon which means spirit. Thus, a pyramid is a three-dimensional version of a cone with the tip removed. Cone shells were used by ancient Egyptians for various purposes including burial. The pyramid was originally intended as a tomb for only the rich and powerful but over time it came to be used for temples and mausoleums. Although many different shapes of pyramids have been built over time, they all have a similar construction: a large base followed by a smaller top section. The Ancient Egyptians believed that after death your soul needed to be free from earthly attachments such as wealth or status so they built pyramids as memorials for their kings and priests.

A pyramid's base can be a triangle, a square, a rectangle, or any form with **more sides**. A triangle is formed by **each side** of a pyramid (the base edge and the apex). The Egyptian pyramids may have been inspired by a holy, pointed stone known as the ben-ben. This was apparently used by the Egyptians to mark sacred places - probably shrines - and may have been a version of the Christian cross.

The ancient Greeks believed that the pyramids were built by **the Egyptian king Cheops**. Modern scientists believe that the idea of building such large structures came from the Nile River Valley. There are several types of pyramids: plain, stepped, conical, and mastaba.

Pyramids were important in ancient Egypt because they were considered homes for the dead. The pharaohs who built the pyramids hoped to go to paradise after they died. They also used the pyramids to store their treasures. There are many mysteries about the pyramids. For example, how did the Egyptians move the huge stones around? Why were the pyramids built on hills rather than flat surfaces? No one knows for sure but many theories have been proposed.