Geometric Constructions

Constructions

Geometric Constructions ... Animated!

"Construction" in Geometry means to draw shapes, angles or lines accurately.

These constructions use only compass, straightedge (i.e. ruler) and a pencil.

This is the "pure" form of geometric construction - no numbers involved!

Learn these two first, they are used a lot:
	Line Bisector
	Angle Bisector
And it is useful to know how to do 30°, 45° and 60° angles. You can use the angle bisector method (above) to create other angles, such as 15°, etc:
	30 Degree Angle
	45 Degree Angle
	60 Degree Angle
	Equilateral Triangle
Points and Lines:
	Perpendicular to a Point on a Line
	Perpendicular to a Point NOT on a Line
	Parallel Line through a Point
	Same (Congruent) Angle
	Cut a line into N segments
Circles:
	Center of a Circle
	Point to Tangents on a Circle
	Inscribe a Circle in a Triangle
	Circumscribe a Circle on a Triangle
	Circle touching 3 Points
And for the "Master Class", a Pentagon
	Pentagon