The edges of a polyhedron are the polygons that bound the polyhedron

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

The triangles are similar. what is the value of x? show your work.

Through non-collinear points there is exactly one plane.