Tetrahedron

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/tetrahedron

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the geometric identity?A convex polyhedron, specifically a triangular pyramid and the 3-simplex
2. How many faces, edges, and vertices does a tetrahedron have?It has 4 faces, 6 edges, and 4 vertices. All of its faces are triangles. The edges meet at the vertices.
3. Can a tetrahedron be made from paper?Yes, you can cut out one of its two nets from a single sheet of paper. Fold along the edges and the net becomes a 3‑D tetrahedron. It shows how 2‑D shapes can become 3‑D.

Convex Polyhedron: A three-dimensional solid whose faces are polygons and which does not 'cave in'.
3-Simplex: The generalization of a triangle to three dimensions, forming the simplest possible polytope in 3D space.