There are two ways to construct a triangle using a ruler and a protractor. The first is a Side, Angle, Side (SAS) construction where two sides and the angle between them is known. The second is an ...

If you want to draw a 15 cm line, you have to align the pen tip with the corner of the ruler, which is a little difficult.

Practise these constructions until you can do them without looking at the instructions. Follow the instructions and draw this perpendicular bisector of a line segment construction.