An edge is the set of points where two (or more) planes meet. Since a triangle must be in just one plane, it cannot have any edges. It has one face, which is part of the plane containing the triangle.
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4 faces/ 4 vertices/ 6 edges
Oh, dude, an equilateral triangle has 3 vertices, 3 faces (which are also the sides), and 3 edges. It's like the most balanced shape ever, so chill.
A tetrahedron, or triangle-based pyramid, has four corners, four faces and six edges.
8 faces 18 edges
4 faces, 6 edges, 4 verticesFour faces, six edges and four vertices.