Luis wants to make a pattern by colouring the sides of the triangles shown in the diagram. He wants each triangle to have one red side, one green side and one blue side. Luis has already coloured some of the sides as shown.
What colour can he use for the side marked ?
Select one option, then click Submit.
only green
only blue
only red
either blue or red
The task is impossible
Select an option, then submit.
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Grey Kangaroo 2015 (2015)
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