What are the items needed for construction?
Ruler, compass and protractor
What item is this?

Compass
What item is this?

Protractor
What item is this?

Ruler
In constructing a line DX of length 4 cm
What is the first step?
Draw a line
Mark D at one end of the line

In constructing a line DX of length 4 cm
What is the second step?
Open the arm of a compass to a distance of 4 cm

In constructing a line DX of length 4 cm
What is the third step?
Place the needle of the compass at point D and make an arc with the pencil end marking the point X.
