Similar Triangles TN

 teachMathematics: Similar Triangles TN

A great triangle mystery! These 24 triangles can be split in to 8 groups of 3 similar triangles by matching the angles. Once in groups students can use proportional reasoning to work out the missing lengths on the similar triangles. This is one of those activities that runs itself. Present the triangles and say "Find out the missing lengths" or add some structure depending on the class. The activity can be extended...


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