Lecture 2

Basic Ruler and Compass constructions

(a couple of simple animations, just for the fun of it)

1. Bisecting a line segment and drawing a perpendicular through the middle point You can control the animation by clicking over it (control-click on Mac; I don't "speak" other types).

2. Constructing a line parallel to a given line and through a given point. The first and the second circle are of equal radii, as are the third and the fourth circle.