5. Simplify: -8 - (-12)+(-2)

True or false? many triangular shapes can be circumscribed about a given circle

Is the figure congruent? yes or no?

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