B Find the perimeter of each polygon 1 3 9 2x 2 5x 3 4x 1 2x 1 2x 10 x 7x 2 5 The triangle has a perimeter of 9x 1 Find a polynomial expression to represent the third side x 3 Find the area of each polygon 7 3x 4 4x 3 2x 5 2 4 2x 1 8 8x 15 6 If the perimeter of the rectangle is 6x 18 what is the height 10 4x 2 2x 3x 5 8x 15 4x 6 3x 4 3x 2 4x 6 3x 4 4x 2 2x 1 Susan Poe