Write the contrapositive of the major premise of this syllogism to determine whether the following argument is valid or invalid:
all nondogs are not blue.
jim is blue.
therefore, jim is a dog.

Its valid i think I'm not 100% sure tho 

its has to be , i really dont know lmaoo
invalid

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .