Line AB of 4 cm is drawn. Another line CD which is congruent and perpendicular to AB is drawn. Length of CD is_____.
A line, AB of 4 cm is drawn. Another line, CD which is congruent and perpendicular to AB is drawn. Length of CD is
Line AB of 4 cm is drawn. Another line CD which is congruent and perpendicular to AB is drawn. Length of CD is