Question

draw a seg AB of length 7cm &bisect it ​

Answer 1

Step-by-step explanation:

1) Draw a line segment AB=7 cm.

2) Open the compass more than half of line AB.

3) Taking point A, draw an arc and from point B draw another arc cutting the previous arc.

4) Repeat 3rd step as in picture.

This will be the perpendicular bisector of line AB.