Is this polygon regular or irregular?

100 points, hi, i’m not sure how to get the equation from the graph and table.

What is the solution set of the quadratic inequality x^2-5< or equal to 0

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex