Constructing bisectors of lines and angles

3 videos
With just a compass and a straightedge (or virtual versions of them), you'll be amazed by how many geometric shapes you can construct perfectly. This tutorial gets you started with the building block of how to bisect angle and lines (and how to construct perpendicular bisectors of lines).

Geometric constructions: perpendicular bisector

VIDEO 1:26 minutes
Sal constructs a perpendicular bisector to a given line segment using compass and straightedge.

Geometric constructions: perpendicular line

VIDEO 1:12 minutes
Sal constructs a line perpendicular to a given line using compass and straightedge.

Geometric constructions: angle bisector

VIDEO 2:17 minutes
Sal constructs a line that bisects a given angle using compass and straightedge.