If you have taken high school geometry, you have learned about the Pythagorean Theorem (even if you don’t remember it today). The theorem is an essential part of Euclidean geometry, and it goes as ...

Use Pythagoras’ theorem to show a triangle is right-angled or to find one side of a right-angled triangle when two sides are known. Make sure you are confident at substituting into and manipulating ...

There are few prehistoric monuments still standing that have catalyzed as much intrigue as Stonehenge. The Neolithic and Bronze Age structure may have been built as early as 3000 BC, and yet ...