ST9-Four triangle centres and the Euler Line-EN

With this activity we intend to deepen knowledge of the properties of the notable centers of the triangle: Incentre, Barycenter, Circumcenter and Orthocenter. These points have been known since ancient Greece, but many of their properties are surprising and little known. Student teachers should review the definitions of the aforementioned notable centers and the tutorials on using APP Milage Learn + and Geogebra. Knowledge about notable centers is reviewed with tasks included in the Milage APP. Teachers will also carry out some activities and their results will be confirmed with Geogebra.