We have two pyramids, a square-base right pyramid and a triangle-base right pyramid. All the edges of both the pyramids are of equal length. We joined both the pyramids with one of the triangle-faces of one pyramid coinciding with one of the triangle-faces of another. What are the total number of faces of the new solid figure obtained?

Source : Winkler - Mathematical puzzles (Please go through this book. It is really good)

## 3 comments:

7 ??

No its not 7. Think again.

Post a Comment