Question

If the perpendicular bisector of line segment $AB$ intersects it at point $M$, $6.8cm$ from $A$, then find the length of $AB$. [2 marks]

Answer 1

A perpendicular bisector of a line segment divides the line segment into 2 equal parts.

[1 mark]

Hence if the perpendicular bisector of line segment $AB$ intersects it at point $O$, $6.8cm$ from $A$, the length of $AB$ is $6.8\times 2=13.6cm$.

[1 mark]