Sheila is building an addition to a house. The points E (- 1 1/2, 2 1/2), F (4 1/2, -2 1/2), G (4 1/2, 3 1/2) and H (-1 1/2, 3 1/2) are the points she plotted on a coordinate plane to draw the room plan. What’s the shape of the addition to the house? What is the perimeter in units?

The perimeter of the addition to the house is units.

The shape of the addition to the house is a square.

H(- 1 1/2, 3 1/2) E(-1 1 2 ,-2 1 2 ),F(4 1 2 ,-2 1 2 ),G(4 1 2 ,3 1 2 ), are the points she plotted on a coordinate plane to draw the room plan. What is the

Sheila is building an addition to a house. The points