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: a ruler, a compass and a pencil. STEP 2: Put the pin of a compass at the end of the line you want to bisect. Set the compass to more than half the length of the line, and draw an arc ...

Many a mathematician has received a long letter from an unknown sender who claims to have found a way to trisect an angle using only a straightedge and compass. The mathematician may read passages of ...