A pentagon is a 5 sided polygon and its 5 interior angles add up to 540 degrees
10
1 triangle is formed.
3
The lines inscribed as directed will result in a "star" being formed inside, and a pentagon will be formed in the middle of the star. The pentagram will have been separated into 11 regions by inscribing it as directed.
A pentagon itself has no inherent squares, as it is a five-sided polygon. However, if you are referring to the number of squares that can be formed within or around a pentagon, that depends on the specific arrangement and size of the pentagon. In a geometric context, you can create various configurations, but there isn't a fixed number of squares associated with a pentagon.
The 3D shape formed by regular pentagons is a dodecahedron, which has 30 edges.
The 3-d figure formed from regular pentagons is the dodecahedron which has 20 vertices.
There is 540 in a pentagon.
I think what you are asking is "What type of triangle is formed within a pentagon?" That depends on whether the pentagon is either regular or not, and also by how you plan on making the triangle, specifically between which diagonals of the pentagon. There is not enough information to answer this question.
A pentagon has five sides.
A pentagon has 5 diagonals.
There are 5 angles in a pentagon.