basic mathematics image
 basic mathematics image

Constructing the midpoint of a segment



Constructing the midpoint of a segment is probably easier than any other straightedge construction.

Step #1:

Use a ruler and a pencil to construct a segment of any length on a piece of paper as you see it below

bisecting-a-segment-image

Then, fix your compass opening to a distance somewhat bigger than 1/2 the length of segment AB.

You should open your compass large enough, but make sure that the distance is not more than the length of AB.

Step #2:

Put the needle of your compass at A and draw an arc


bisecting-a-segment-image

Put the needle of your compass at B and draw an arc


bisecting-a-segment-image

The two arcs should meet as shown below:


bisecting-a-segment-image

Step #3:

Draw a line joining the two points where the two arcs intersets


bisecting-a-segment-image

The point of intersection of the line and the segment shown with a green point is your midpoint


bisecting-a-segment-image






Page copy protected against web site content infringement by Copyscape





Ask a Math Teacher
Math teachers are online. Ask a Question, Get an Answer ASAP.
















|Are you a fan of this site? Support us |Our awards! |Our partners |About me |Disclaimer |Build your website! |Advertise on my site |Try our free toolbar |Like us on Facebook |Take our survey|
Copyright © 2008. Basic-mathematics.com. All right reserved