Area of Non-right Triangles Quick Check
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Question
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 2 and the right of column 4. The second vertex is at the top of row 9 and the right of column 4. The third vertex is at the top of row 6 and the right of column 9.
Find the area of the non-right triangle. The base and height are found by counting the squares.
(1 point)
Responses
65 square units
65 square units
17.5 square units
17.5 square units
35 square units
35 square units
32.5 square units
32.5 square units
To find the area of the non-right triangle, we can use the formula:
Area = 1/2 * base * height
The base of the triangle is 5 units (from column 4 to column 9) and the height is 7 units (from row 2 to row 9).
Plugging these values into the formula:
Area = 1/2 * 5 * 7
Area = 17.5 square units
Therefore, the correct answer is: 17.5 square units