Line Constructions compass
Each sketch is followed by an interactive Java applet.  Try dragging various points in the sketch to explore additional cases. Constructions are made using The Geometer's Sketchpad® software available from
Key Curriculum Press.
Erect a  perpendicular to a given line at a given point on the line
Drop a perpendicular to a given line from a given external point 
Bisect a given line segment
Erect a perpendicular to a line segment at the extremity of the segment 
Draw a line through a given external point parallel to a given line
Divide a line segment into a given number of equal parts
 Divide a given line segment into extreme and mean ratio

Send email to:  tstreilein@nvcc.edu

© 2002  Revised March 2003

Home      Contents     Angles      Circles      Inscribed      Lines     Polygons     Triangles