Question

What other symbolic value do the aztec pyramids hold?

Answer 1

Answer:

On Edgenuity it's "c": they represented mountains, a source of life-sustaining water and fertility.

Explanation:

Edge2020

Answer 2

Aztec temples were usually found at the top of pyramids and they are often called temple-pyramids. 
Designed using ancient Mesoamerican architectural traditions that went back thousands of years. Temple-pyramids were used for religious ceremonies and sacrifice. One of the largest pyramids in the world is at Cholula, near Mexico City.