Answer:
37.5 units²
Explanation:
Please see the attached pictures for full solution.
*The shoelace method can be used to find the area of any polygons given its coordinates. Ensure that if the polygon has x number of points, (x+1) coordinates are written down in the formula, in which the last coordinate written down is the same as the 1st coordinate. (A triangle has 3 points so 4 coordinates were written down)
In method 2, the length/ height/ base/ breadth can be found by subtracting its x and y coordinates. Alternatively, count the number of squares. Each square would be 1 unit.