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 ...

MOST READERS will have encountered Pythagoras’s theorem about right-angled triangles—that the square on the hypotenuse is equal to the sum of the squares on the other two sides—at school. But the less ...