how to divide a given line segment into four equal parts of 8cm....plzzzzzz my exam is there 2morrow

Hope it helps:-

Steps of construction:-

1) draw a line segment AB = 8 cm.
2) draw a ray AC making an acute angle with AB.
3) on ray AC, starting from A, mark of 5 equal line segments, AC1, C1C2, C2C3, C3,C4, C4C5 with the help of compass.
4) join BC5.
5) through points C4, C3, C2, and C1 respectively using compasses draw lines parallel to C5B intersecting line segment AB, in B4, B3, B2, and B1.
      Thus the points B1, B2, B3, and B4 divides AB into five equal parts.

Have a good day..!!!!!