View source for Perpendicular bisectors and circumcenter of a triangle

Circumcentre for different types of triangles is investigated with this activity and this further explores several geometric relationships related to the circumcentre and perpendicular bisectors.  

===Objectives===
Introduce perpendicular bisectors in a triangle and their point of concurrence.

===Estimated Time===
30 minutes.

=== Prerequisites/Instructions, prior preparations, if any ===
Ensure that circles, triangles, perpendicular bisectors and their constructions are covered

===Materials/ Resources needed===
Digital resources: Laptop, geogebra file, projector and a pointer.

Geogebra files: [https://ggbm.at/fjvr55jd Concurrency of perpendicular bisectors.ggb]

{{Geogebra|fjvr55jd}}

===Process (How to do the activity)===
#Project the geogebra file and ask the following questions.
*Developmental Questions:
#What is a perpendicular bisector ?
#How do you construct it ?
#Identify the point of intersection of perpendicular bisectors in different triangles.
#What is circumcircle ?
*Evaluation:
#How is circumradius determined ?
#What parts of the circle is circumcircle touching ?
*Question Corner:
#What are the practical applications of determining the circumcircle ?

[[Category:Triangles]]