Use interactive geometry software to construct an equilateral triangle that maintains its shape even if you move its vertices.

This lesson focuses on the history of geometric construction beginning with Euclid's Axioms to the simple tools such as the straight edge and the compass.

Students practice constructing scale drawings.

Learn how to construct bisectors of line segments and angles.

Contains over five hundred Geometry articles, problems, puzzles, and games. Some sites relating to circles are provided within this list.

Great resource to practice and strengthen math skills pertaining to Geometry. Math worksheets are printable, may be customized, and include answer keys.

Understand the step-by-step processes used to create accurate geometric figures.

This activity is a tutorial on using the Cabri Geometry application. Students' perform geometric constructions which range from simple triangles to complex conics.

Students use the Cabri Jr. application to draw triangles and construct perpendicular bisectors on the sides of a triangles. They study the properties of a triangle and understand how the measures of angles of a triangle is always 180...

In this activity, students will practice some of the basic functions of the Cabri Geometry software, including use of the Pointer, Point, Line, Measure, and Construct toolbars.

Use Cabri Jr to copy an angle. The activity is followed by a student-to-student interview/reflection sheet intended to require students to think, talk, and write about why the construction worked. The reflection sheet could be adapted...

Test your knowledge of using a protractor to construct triangles.

This site from Advogato is all about angles. It contains information starting with what an angle is and what it looks like, all the way up to bisecting angles and theorems about angles. This is very good information for students just...

In this activity, students use the Geometer's Sketchpad application to construct Euler's Line, Pythagorean Proof, and Fermat's point. They also investigate the concept of perimeter.

In this activity, students use the Cabri software to mark points, draw lines, construct parallel and perpendicular lines, angles, bisectors, and triangles. They learn how to use the tool to measure angles.

The middle schoolers will be split into small, cooperative groups and build a city following specific guidelines. The students will learn how a city is constructed with angles, intersections, parallel, intersecting, and transversal...

Drag shapes in this geometry and symmetry practice activity.

This site provides a step-by-step method to construct congruent segments and angles with a straight edge and compass.

Students learn how to construct a triangle with three known sides using a straightedge and a compass. Includes an animated demonstration.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to construct perpendicular bisectors and use the Perpendicular Bisector Theorem.

Use a "linkage strip" to build triangles with different side lengths. When you build a triangle, see if you can deform it into a different triangle while keeping the side lengths the same.

The activity is designed to help learners create constructions using Geometer?s Sketchpad. The geometry tutorial consists of definitions and pictures of mathematics terms.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students about tangent lines and how to apply theorems related to tangents of circles.

See how the cross-sections of solids relate to their shapes.