# Developing the Concept of a Determinant using DGS

- Author:
- Ana DT_1

Set the vertices of the parallelogram to obtain the following figures:
Square

*ABCD*with side 1 Square*ABCD*with side a Rectangle*ABCD*with sides a and b Triangle*ABD*Write the coordinates of the vertex*B*and*D*, the matrix and the determinant representing the corresponding area. Provide proves.