Find the value of x and the measure of angle mnq

Since the two angles within MNP equals to 90 degrees: 3X-13+58=90
Isolate X to one side: 3X= 45
Divide by three: X=15
Plug in 15 for X for MNQ (3X-13)= 32 degrees for angle of MNQ.

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“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 .