3 corners (vertices) and 3 edges (sides).
A three dimensional triangle is also known as a pyramid. In a triagonal pyramid, there are six edges and four corners.
A triangle has 3 sides (or edges) and 3 corners (or angles)
A triangle consists of three corners and three edges.
3
It has 4 corners.
A triangle has 3 sides (edges) and three vertices (corners)
A triangular-based pyramid has 4 corners, 4 faces and 6 edges.
First, I'm assuming the by corners, you mean verticies. Second, the answer depends on what you mean by "three dimensional triangle. To some, this could be interpreted as a pyramid. However, I think it is more likely that you are referring to a triangular prism- a prism shape with a triangle as each base. In this case, there are six "corners". Each side has three, where the length-wise edges of the prism intersect the verticies of the triangle. There are three corners on each side, for a total of six. If you really meant a pyramid, then there are five corners.
An equilateral triangle has sides and angles. There are 3 sides in any triangle. Edges are in three dimensional figures.
5 faces 8 edges 5 corners (vertexes) * * * * * Wrong! The answer given above is for a SQUARE based pyramid. A triangle based pyramid, or a tetrahedron, has 4 faces, 6 edges and 4 corners (vertices).
A triangles has three sides (also known as edges) and three corners (also known as vertices).
8 edges, 4 corners or vertices and 6 faces! :) * * * * * Not true. A rectangle is a 2-dimensional shape. It has four sides and four vertices (corners).