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Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

Seven Sticks

Explore the triangles that can be made with seven sticks of the same length.

Three Fingers and a Loop of String

Using a loop of string stretched around three of your fingers, what different triangles can you make? Draw them and sort them into groups.

Animated Triangles

Age 5 to 7 Challenge Level:

Luke from St Patrick's School responded to this problem. This is how he described the film:

It uses rotating, sliding and shifting (we can call this "translating"). Along with that the triangles are changing from iscoseles to equilateral to scalene and of course right angled!

Luke watched the first 34 seconds and said:

It only uses equilateral and scalene triangles!

Describing the next part, up to a minute, Luke wrote:

The triangle(s) are rotating continuously.

Thank you, Luke. I wonder whether anyone can add any more detail to Luke's comments?