Here are five rods of different lengths. 6cm 10cm 2cm4cm 8cm.

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Presentation transcript:

Here are five rods of different lengths. 6cm 10cm 2cm4cm 8cm

The rods can be joined end-to-end to make triangles. Here are two examples 4cm8cm 10cm 6cm 10cm 8cm 4cm Each of these triangles is … Scalene (because all its sides are different lengths). Obtuse (because one of its angles is greater than 90  ).

Combine rods to make as many different types of triangle as possible. What are the different types of triangle can you make? What properties does each triangle have and how do you know? Also find a combination of rods that cannot make a triangle, and explain why not. 6cm 10cm 2cm4cm 8cm