Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to create coordinates that represent the vertices of two triangles: one with an area of less than 55 units^{2} and one with an area of more than 55 units^{2}. You may reuse all the integers each time.

### Hint

How can you graphically estimate your triangle’s area before you calculate it?

### Answer

There are many possible answers. One is:

Greater than 55 units

(-9, -8), (0, 8), and (9, -3)

Greater than 55 units

^{2}which has an area 121.5 units^{2}(-9, -8), (0, 8), and (9, -3)

Less than 55 units^{2}

(-3, 1), (0, 4), and (3, -4) which has an area 16.5 units^{2}

Source: Robert Kaplinsky