Convex and Concave Quadrilateral

Draw the both diagonals of the quadrilateral $\mathrm{TU}VW$. Do they intersect each other?

Draw  both the  diagonals of the quadrilateral $\mathrm{EFGH}$. Do they intersect each other?

Check the given quadrilateral $\mathrm{TUVW}$ is a concave quadrilateral?

Write answer as Yes / No.

Check the given quadrilateral $\mathrm{EFGH}$ is a convex quadrilateral?

Write answer as Yes / No.