To determine which shape can be repetitively folded to construct a tetrahedron, we need to analyze the geometric properties of each option:

1. **Triangles**: A tetrahedron is a three-dimensional shape made up of four triangular faces. This aligns well with the idea of folding triangles to create a tetrahedron.

2. **Cubes**: Folding a cube would result in a complex structure that does not correspond to a tetrahedron. Cubes are six-faced structures and cannot be folded into a tetrahedron.

3. **Parallelograms**: While parallelograms can be used in various geometric constructions, they do not naturally lead to the creation of a tetrahedron when folded.

4. **Squares**: Similar to cubes, squares are two-dimensional shapes that do not directly relate to the formation of a tetrahedron through folding.

### Conclusion
Based on the analysis, the correct answer is:
**A. triangles**

Triangles are the fundamental shape from which a tetrahedron can be constructed through repetitive folding.

Question

To determine which shape can be repetitively folded to construct a tetrahedron, we need to analyze the geometric properties of each option:

1. **Triangles**: A tetrahedron is a three-dimensional shape made up of four triangular faces. This aligns well with the idea of folding triangles to create a tetrahedron.

2. **Cubes**: Folding a cube would result in a complex structure that does not correspond to a tetrahedron. Cubes are six-faced structures and cannot be folded into a tetrahedron.

3. **Parallelograms**: While parallelograms can be used in various geometric constructions, they do not naturally lead to the creation of a tetrahedron when folded.

4. **Squares**: Similar to cubes, squares are two-dimensional shapes that do not directly relate to the formation of a tetrahedron through folding.

### Conclusion
Based on the analysis, the correct answer is:
**A. triangles**

Triangles are the fundamental shape from which a tetrahedron can be constructed through repetitive folding.

Knowee AI · Accepted Answer

To determine which shape can be repetitively folded to construct a tetrahedron, we need to analyze the geometric properties of each option:

1. **Triangles**: A tetrahedron is a three-dimensional shape made up of four triangular faces. This aligns well with the idea of folding triangles to create a tetrahedron.

2. **Cubes**: Folding a cube would result in a complex structure that does not correspond to a tetrahedron. Cubes are six-faced structures and cannot be folded into a tetrahedron.

3. **Parallelograms**: While parallelograms can be used in various geometric constructions, they do not naturally lead to the creation of a tetrahedron when folded.

4. **Squares**: Similar to cubes, squares are two-dimensional shapes that do not directly relate to the formation of a tetrahedron through folding.

### Conclusion
Based on the analysis, the correct answer is:
**A. triangles**

Triangles are the fundamental shape from which a tetrahedron can be constructed through repetitive folding.

The tetrahedron can be constructed from the repetitive folding of _____.A.trianglesB.cubesC.parallelogramsD.squares

Question

The tetrahedron can be constructed from the repetitive folding of _____.

Solution

Conclusion

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