Learning outcomes You must be able to… Find the equations of lines

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Presentation transcript:

Learning outcomes You must be able to… Find the equations of lines Use constructions (compass work) to locate the centre of a triangle using different techniques.

Centroids The barycentre is the point of intersection of all the medians of a triangle The Median is defined to the straight line from a vertex to the midpoint of the opposite side.

Centres of a triangle On a set of axes from 0 to 10 (both axes), plot three point (0, 2), (9, 5) and (5, 7). Draw straight lines to form a triangle.

Centres of a triangle Find the equations of the three straight lines. x x x

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What needs to stick? Numerator Top number. Number of identified parts Denominator Bottom number. Parts of a whole