Perpendicular bisectors and circumcenter of a triangle

Objectives
Introduce perpendicular bisectors in a triangle

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: This eogebra file was done by ITfC-Edu-Team.

Process (How to do the activity)

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