Hello everybody! Who can explain and draw a diagram for 2, 3 and 4. I will be glad if somebody able to explain.
It looks to me like you are told exactly what to do. Is there any specific thing that is confusing you?
In two, you are asked to draw a line segment, AB, 5 cm long. Do that using a ruler. Then draw an angle having vertex B, and on side the line you just drew, of 45 degrees. There are ways of "constructing" such an angle (using straight edge and compasses) but since this says "draw" rather than "construct" I would just use a protractor.
In three you are asked to draw a line segment, AB, of length 6 cm, then construct two right angles at A and B. Measure those two side lengths to be 4 cm. and connect the ends. It then asks "what kind" of figure that is. What kind of figure has four sides and all right angles?
In four, you are asked to do the same thing except that the first line segment, AB, is to have length 4 cm, the same as the next two sides you construct. What kind of four sided figure has four right angles and all sides the same length?