Here are five rods of different lengths.

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# Here are five rods of different lengths. - PowerPoint PPT Presentation

10cm. 8cm. 6cm. 4cm. 2cm. Here are five rods of different lengths. 10cm. 6cm. 8cm. 4cm. 4cm. 8cm. 10cm. The rods can be joined end-to-end to make triangles. Here are two examples. Each of these triangles is … Scalene (because all its sides are different lengths).

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Presentation Transcript

10cm

8cm

6cm

4cm

2cm

Here are five rods of different lengths.

10cm

6cm

8cm

4cm

4cm

8cm

10cm

The rods can be joined end-to-end to make triangles.

Here are two examples

• Each of these triangles is …
• Scalene (because all its sides are different lengths).
• Obtuse (because one of its angles is greater than 90).

10cm

8cm

6cm

4cm

2cm

• 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.