24 Pack plastic protractors: math protractor features an open center and accurate 6 inches ruler across the base; 24 Pack can meet the needs, and adequate to use for a long time Measure range ...

What you need: ruler, protractor, pencil and paper ... In this case use the lengths 8 cm, 4 cm and 5 cm. Set the compass width to 5 cm. Place the compass at the other end of the line and draw ...