9-12
Learn the Law of Sines and the Law of Cosines and determine
when each can be used to find a side length or angle of a triangle.
9-12
Inscribe and circumscribe regular polygons in and around the
unit circle, which is known to have an area of π.
9-12
Explore geometric sequences and exponential functions by
considering the placement of frets on stringed instruments.
9-12
This applet allows for the discovery of the incenter and incircle of a triangle.
9-12
This interactive demonstrates how to bisect an angle.
9-12
This interactive allows users to investigate three types of
quadrilaterals; ones with: perpendicular bisectors, congruent
perpendicular bisectors, and congruent bisectors.
9-12
This applet allows for the construction and exploration of the Simson Line.
9-12
Where should a soccer player be placed so that she has the best chance of making a goal?
9-12
Construct and explore of a circumcircle.
9-12
Use this tool to investigate what happens when point P is moved to various points within, on, and outside the circle. What, if any, relationships can you identify among the segments and radius?
