Divide seg CD of length 6.4 cm into 3 congruent parts.

i. Firstly we have to draw a line segment CD of length 6.4 cm

ii. Draw a line with an acute angle from point C

iii. Point the compass on C, and cut the new line with some radius

iv. Place the compass along the line and make 3 arcs. Since we need 3 congruent parts, and name the last one as “F”

v. Take length of DF as radius draw an arc from C just below it. Again, take the length of CF as radius and draw an arc which cuts the previous arc from D, name the intersection point as D’

vi. Connect D and D’

vii. Taking the same length that we used in line CC’, draw arcs along DD’.

viii. Connect the points along CC’ and DD’ and name the intercepts along CD as I, J

And observe the equal length segments.