Compass/Protractor Constructions

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How to construct the circumcenter of a triangle with compass and straightedge

How find the center of a circle using any right-angled object

How to find the center of a circle with compass and straightedge

Centroid of a triangle construction with compass and straightedge

Step-by-step demonstration of how to construct a 60 degree angle.

Step-by-step demonstration of how to construct a 45 degree angle.

Step-by-step demonstration of how to construct a right angle.

This web page shows an easy to follow process for constructing a perpendicular bisector.

This web page shows an easy to follow process for constructing a line perpendicular to another line through a point not on the line.

This web page shows an easy to follow process for constructing a perpendicular line through a point on a line.

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