Save guides, add subjects and pick up where you left off with your BBC account. There are two ways to construct a triangle using a ruler and a protractor. The first is a Side, Angle, Side (SAS ...

What you need: ruler, protractor, pencil and paper. Use these to construct a triangle when you know the length of 1 side and the 2 angles at each end of it. In this case use the length 8 cm ...

A court in China's Hunan Province has upheld a prison sentence for a teacher who threw a triangle ruler in a class with 9-year-old students and it struck one of them, causing severe injuries. The ...