# Geometric Constructions

Related Topics:
More Geometry Lessons

In these lessons, we will learn how to use a pair of compasses and a straight-edge to construct different geometric shapes given certain conditions.

Geometric constructions involve drawing geometric shapes that satisfy certain requirements using a straight-edge and a pair of compasses.

The tools to use are a ruler (or straight-edge) and a pair of compasses. A few points to remember when doing the types of geometric constructions covered in these lessons:

• Do not use a protractor
• Use a sharp pencil
• Do not erase the construction lines. (They will show the examiner how the lines or shapes were constructed)

The following diagram shows some examples of constructions. Scroll down the page for more examples and solutions. These lessons and videos on Geometric Construction will include the following topics:

This video shows how to copy a line segment using a compass and straight-edge.

This video shows how to copy an angle using a compass and straight-edge.

This video shows how to construct perpendicular bisectors.

This video shows how to use a compass and straightedge to construct a perpendicular to a given line through a point not on that line.

This video shows how to use a compass and straightedge to construct an angle bisector.

This video shows how to a compass and straightedge to construct a line parallel to a given line through a given point not on that line using corresponding angles.

This video shows how to construct parallel lines using congruent alternate interior angles given the following information: a given line and a point not on that given line.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. 