Maths Olympiad Prep

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CEMC Pascal, 2026

Geometry Difficulty 1.2 Junior Find the answer Canada

In the diagram, 99 edges of
the cube are visible.

Figure 0

How many edges of the cube are not visible?

Pick one

Solution

Every cube has 1212 edges, and
so 12−9=312-9=3 edges are not
visible.

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