It depends on the pyramids.
You can't tell without seeing the pyramids.
I believe what you are thinking of is an octahedron. It resembles two pyramids with square base that are joined.
No, none of them do.
Both rose circa 100 BC and fell and were ultimately abandoned many centuries before contact with Europeans was established. In the case of Monte Alban, it was abandoned by 750 AD, while Teotihuacan did the same by 650 AD.
The two largest pyramids in Teotihuacan are the Pyramid of the Sun and the Pyramid of the Moon. The Pyramid of the Sun is the largest and the Pyramid of the Moon is the second largest.
The Pyramid of the Sun, and the smaller Pyramid of the Moon.
The workers
No. They are from the Teotihuacan civilization, who were precursors of the Aztecs.
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Several kinds. The most important include Mayan, Olmec and Teotihuacan pyramids. See the related links section for some examples
Pyramids and other large spiritually monuments.
There are hundreds of them. I believe you think of the two most important: The Piramide del Sol (Sun's pyramid) and Piramide de la Luna (Moon's Pyramid) in the ancient ruins of Teotihuacan.
The Aztec pyramids are located in present-day Mexico, primarily in and around the city of Mexico City. The most famous Aztec pyramids are found at the archeological site of Teotihuacan, located just outside of Mexico City.
There were many civilizations who built pyramids in Mexico. Some of the most prominent were the Teotihuacan, Olmec, Aztec and Mayan civilizations.
Which pyramids? There are several of them: The pyramids of Teotihuacan are some 50 kilometers (31 miles) northeast of the city center. The pyramids of Cholula are 150 kilometers (93 miles) east of the city. Chichen Itza is more than 1100 kilometers (684 miles) east of the city.
No, Teotihuacan is not a volcano in Mexico. Teotihuacan is an ancient Mesoamerican city, located near present-day Mexico City. It is known for its impressive pyramids and structures built by the Teotihuacan civilization.