Due to math content, this page has special requirements (including JavaScript) for full functionality.
With your current viewing scenario, it is not appearing and behaving as it is supposed to!
Please visit Dr. Carol J.V. Fisher's Homepage to learn what this site has to offer.
Watch the "Welcome" video to get started—hope to see you back here soon!

Dr. Carol J.V. Fisher's Homepage

CONSTRUCTIONS

A construction is a geometric drawing for which only a compass and a straightedge may be used.
GeoGebra can be used to "simulate" a construction, by using only the circle and segment tools.

There are many excellent construction illustrations here:  http://www.zefdamen.nl/CropCircles/Constructions/Constructions_en.htm

COPYING A LINE SEGMENT and AN ANGLE

using GeoGebra: GeoGebra Worksheet: copying a line segment and an angle


BISECTING AN ANGLE

by hand: bisecting an angle
using GeoGebra: GeoGebra Worksheet: bisecting an angle


You need the Geometer's Sketchpad for some of the following files:

bisecting a line segment
Open with Geometer's Sketchpad: See how Geometer's Sketchpad can be used to bisect a segment

Open with Geometer's Sketchpad: See how Geometer's Sketchpad can be used to construct a line parallel to a given line through a given point

construct a line perpendicular to a given line, passing through a given point on the line
Open with Geometer's Sketchpad: See how Geometer's Sketchpad can be used to construct a line perpendicular to a given line, passing through a given point on the line

construct a line perpendicular to a given line, passing through a given point not on the line
Open with Geometer's Sketchpad: See how Geometer's Sketchpad can be used to construct a line perpendicular to a given line, passing through a given point not on the line

Open with Geometer's Sketchpad: See how Geometer's Sketchpad can be used to copy a triangle

an equilateral triangle