A sunken ‘pyramid’ located near Taiwan has researchers rethinking everything they know about ancient civilizations.

Each side of the Great Pyramid rises at an angle of 51.5 degrees to the top. Not only that, each of the sides are aligned almost exactly with true north, south, east, and west. For a pyramid to ...

You often need to use Pythagoras' theorem more than once in each problem as we create extra right-angled triangles in ... in this square-based pyramid and give your answer to one decimal place.