**Goals: –**

Determine the coordinates of a point in any landmark.

– Calculate the middle coordinates of two points.

– Calculate the distance between two points of the plane in an orthonormed marker.

**Activity 1: M**

ove the dots I and J of the left rep to compare the characteristics of the properties of the figures from one orthonormed repellent to another.

With the help of the previous activity, place the properties kept in the various landmarks.

**Activity 2: Point coordinates**

A handy tip to NEVER be wrong again by placing a point on a repere: