Cuemath
Cuemath: Point of Concurrency
Learn all about the point of concurrency. This lesson targets the point of concurrency of perpendicular bisectors, the point of concurrency of the angle bisectors of a triangle, and has interesting solved examples and practice questions.
University of Georgia
University of Georgia: Extended Concurrencies of a Triangle
This site is an extended activity on point concurrency in triangles. The page goes through an exploration with the Napoleon Point and the Fermat Point. The site requires the use of GSP.
Texas Instruments
Texas Instruments: Circumcenter and Incenter
In this activity, students examine the location of the circumcenter and incenter for different triangles.
CK-12 Foundation
Ck 12: Geometry: Altitudes Intermediate
[Free Registration/Login may be required to access all resource tools.] This concept teaches students properties of altitudes of triangles and how to apply them.
CK-12 Foundation
Ck 12: Geometry: Angle Bisectors in Triangles Intermediate
[Free Registration/Login may be required to access all resource tools.] This concept teaches students properties of angle bisectors and how to apply them.
CK-12 Foundation
Ck 12: Geometry: Medians
[Free Registration/Login may be required to access all resource tools.] This concept teaches students the properties of medians and how to apply them.
CK-12 Foundation
Ck 12: Geometry: Perpendicular Bisectors
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to construct perpendicular bisectors and use the Perpendicular Bisector Theorem.
University of Georgia
University of Georgia: Perpendicular Bisectors Are Concurrent Proof
This site gives the proof that the three perpendicular bisectors of the sides of a triangle are concurrent.
Math Open Reference
Math Open Reference: Concurrent Lines
Learn about concurrent lines with this helpful reference tool. Provides a detailed definition and example.
Math Open Reference
Math Open Reference: Points of Concurrency
Learn about points of concurrency with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.