wei made two square pyramids and glued the congruent bases together, how many faces does here figure have?

I think it is 8 cause when the bottoms meet,the sides do not match flatly to one of the four sided will count as two so two times four equals 8 and you don’t count the bottom of each pyramid cause it is glued to together so, the shape would be a octahedron!

I also think it could be 9 cause 4 plus 5 equals 9!

Each has a base and four sides. With the bases glued together, there are 4 + 4 faces.

To determine the number of faces in the figure created by gluing two square pyramids together, we need to first understand the individual components.

A square pyramid has a square base and four triangular faces that meet at a point called the apex. So, each square pyramid has 1 square base and 4 triangular faces, making a total of 5 faces.

When two square pyramids are glued together, their congruent bases are joined, resulting in one larger square base. The triangular faces that were initially separate are now combined into a single pyramid shape with four triangular faces.

So, the figure created by gluing two square pyramids together will have one square base and four triangular faces from each pyramid, totaling 8 triangular faces. Additionally, there will be one shared triangular face formed by the joining of the two pyramid tops.

Therefore, in total, the figure will have 1 square base, 8 triangular faces, and 1 shared triangular face, resulting in a total of 10 faces.

10 because a square pyramid a 5 faces so 5+5=10!