The Pei pyramid is 72' tall which means that its base must be 112' per side. The area of glass is about 20,700 sq ft.
There is a small extension of the base for the entrance doorways, I don't know how many, that is not included in the above.
The angle that the sides make with the ground is 52 degrees -- measured between the side and the ground, NOT along an egde - that would be around 42 dgrees.
There are two or three smaller pyramids positioned around the large one.
Pei also designed the Rock & Roll Hall of Fame.
See
Great Buildings on-line for lots of material on this Pyramid!
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