# Projection of Apex of Right Pyramid

- Author:
- lowaiyip

- Topic:
- Pyramid

Definition of a right Pyramid : The slant height of all edges are equal.
This demonstration would like to show that the projection of Apex of a right Pyramid would be coincided with the circumcentre of the base of the pyramid.

1. Ask students how to find the projection (V') of the Apex (V) of the
pyramid. ( After discussion, please tick "projection" to show it.)
2. Ask students which centres of triangle ABC would coincided with V'
( After discussion, please tick "4 center" to show it.)