6 × 2 = 12. A hexagonal prism has 12 vertices. A pyramid has one more face than the number of sides of its base. A triangle-based pyramid has four faces. A square-based pyramid has five faces.

A remarkable 3,800-year-old hexagonal pyramid has been uncovered in eastern Kazakhstan, shedding light on a little-explored chapter of Bronze Age civilization. Located at the Kyrykungir site near ...