3-D shapes

Throughout this term my whole class has been learning about Geometry. Yesterday we created 3-D shapes using nets. I created a tetrahedron. A tetrahedron is shaped like a pyramid, but it has a triangle as a base. While I was creating it, I found it mostly easy but the gluing difficult because it kept on coming off and I was getting frustrated that it kept on coming. 
My shape has 4 faces, 6 edges and 4 corners.

1. First you have to cut it out.

2. You have to glue and fold it, but take your time.

3. Finally you've done.