Texas Instruments
Texas Instruments: Traditional Compass Construction: Angle Bisector Using Cabri
Use Cabri Jr. and the Compass command to complete the actual construction - pencil, paper, and compass process.
ClassFlow
Class Flow: Compass Constructions
[Free Registration/Login Required] This flipchart provides the basic step-by-step guidance for making congruent constructions using a compass and a ruler.
BBC
Bbc: Ks3 Bitesize: Constructions and Locus
This BBC Bitesize focuses on constructions and locus. To understand this activity, you must already know how to define perpendicular, bisect, and locus.
Math Open Reference
Math Open Reference: Constructions
Learn about drawing shapes using only a compass and straight edge or ruler with out measuring any lengths or angles.
Oswego City School District
Regents Exam Prep Center: Copy a Line Segment and an Angle
This site provides a step-by-step method to construct congruent segments and angles with a straight edge and compass.
Oswego City School District
Regents Exam Prep Center: Basic Constructions
This site gives a few tips when using a compass for the optimal drawing techniques.
Math Is Fun
Math Is Fun: Constructing a Triangle With 3 Known Sides
Students learn how to construct a triangle with three known sides using a straightedge and a compass. Includes an animated demonstration.
Oswego City School District
Regents Test Prep Center Perpendiculars
This step-by-step method teaches students to construct a perpendicular to a line through a point on--or off--the initial line using compass and straight edge.
Other
Gobierno De Navarra: Con Regla Y Compas
Learn how to construct figures in these interactive activities with only a ruler and a compass.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Constructing the Orthocenter
Dr. Math shows how to construct the orthocenter of any triangle using a compass and straight edge.
Oswego City School District
Regents Exam Prep Center: Bisect a Line Segment and an Angle
This step-by-step tutorial teaches students how to construct a bisector of a segment and the bisector of an angle.
Oswego City School District
Regents Exam Prep Center: Parallel Through a Point
This step-by-step demonstration teaches students to construct a line parallel to another through a given point.
Sonoma State University
Sonoma State University: Angle Bisector
This site offers an explanation with words and pictures on how to bisect an angle using a compass and straightedge.
Texas Instruments
Texas Instruments: Got an Equilateral Triangle? With Cabri Jr.
Using the Compass tool in Cabri Jr., students will construct an equilateral triangle, and check the length of each side. When a vertices is moved using the Alpha hand, the triangle remains equilateral.