Video: Counting Triangles in 2D Composite Shapes

Daniel is trying to fit triangles into this hexagon. How many triangles will he need in total?

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Video Transcript

Daniel is trying to fit triangles into this hexagon. How many triangles will he need in total?

If we count the triangles that Daniel’s already used, we can see there are four. And he could fit two more triangles into the hexagon.

So Daniel will need a total of six triangles.

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