Use the image to answer the question.
An illustration shows a 10 by 10 grid. A non-right triangle is enclosed within the grid. The first vertex is at the top of row 1 and the right of column 10. The second vertex is at the top of row 4 and the left of column 1. The third vertex is at the bottom of row 10 and the right of column 10.
What is the area of the non-right triangle? The base and height are found by counting the squares.
To find the area of the triangle, we first need to find the base and the height.
The base is the distance between the first and third vertices, which is 10 units.
The height is the distance between the second vertex and the line containing the first and third vertices. To find the height, we can draw a perpendicular line from the second vertex to the line containing the first and third vertices. This line will pass through row 1. Counting the squares, we find that the height is 3 units.
Now, we can use the formula for the area of a triangle:
Area = 1/2 * base * height
Area = 1/2 * 10 * 3
Area = 15
Therefore, the area of the non-right triangle is 15 square units.