Once the grid has negative numbers, a figure can sit across an axis. These free printable worksheets give polygon corners in all four quadrants, an empty grid for each one and a side to measure, with an answer sheet that draws the finished figure.
If they get stuck
The answer key prints on a separate page.
Plotting works just as it did before: first number across, second number up, and a negative number goes the other way. The new difficulty is the measuring. When a side crosses an axis, the two coordinates can have different signs, and the length is not what you get by subtracting the digits you can see.
A side from (−3, 2) to (4, 2) is 7 units long, because it runs 3 to reach the axis and then 4 more. Counting the squares shows it straight away, and that picture is what makes the rule about subtracting a negative feel true rather than just remembered. This is a good sheet to come back to after integer subtraction.
A(−3, 2) B(3, 2) C(1, −1)