Which of the following determines a plane?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Triangle knm is what is true about the sides of knm

Ineed your ! i was to turn this into pond first thing i gotta do is outline the inside with this plastic how big should i cut the plastic the height: 10 1/2” the length: 40” the width: 12” me !