– Calculate the distance between two points

– Calculate the middle coordinates of a segment.

– Solve problems of geometry hovering on simple or complex figures (triangle, quadrangles, circles).
– Calculate lengths, angles, areas and volumes.

Activity 1: Using the following geogebra applets, the middle and length formulas of a segment should be obvious to you….

Length of a segment (use of pythagorean theorement in rectangle triangle)

Middle of a segment:

Exercise 9 Index: Use this geogebra applet to place the A’, B’, and C’…

Problem index

For the calculation of EH, do not forget the relationship of Pythagoras … do the same to calculate the height of the CBF triangle from F…

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