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Four identical sides
Add 3 matchsticks to form 4 identical triangles.
This is a view from the top. Some of the matchsticks are placed vertically in three dimensions. The result is a triangular pyramid (tetrahedron), with four identical triangles.
Four identical sides
Add 3 matchsticks to form 4 identical triangles.
This is a view from the top. Some of the matchsticks are placed vertically in three dimensions. The result is a triangular pyramid (tetrahedron), with four identical triangles.
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