Luella drew the triangle shown on a coordinate grid. To find the triangle’s area, she multiplies 12 by 2 and then multiplies the result by another number. What is the number Luella can use to complete the calculation? (1 point) Luella can multiply 12 by 2 by to find the triangle’s area.

Answer 1

To calculate the area of a triangle using a coordinate grid, Luella can follow the formula for the area of a triangle, which is:

\[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \]

In Luella's calculation, she has multiplied 12 by 2, which suggests she is using the base and height of the triangle. Assuming that 12 is the height of the triangle and 2 is its base, our calculations would look something like this:

1. Base = 2
2. Height = 12

She is supposed to multiply 12 (height) by 2 (base) to get the area, but remember, the area formula includes a \(\frac{1}{2}\) factor. Therefore, to complete her calculation, she needs to multiply by \(\frac{1}{2}\):

So, Luella can multiply by \(\frac{1}{2}\) to find the triangle’s area. Thus, the number Luella can use to complete the calculation is:

\(\frac{1}{2}\)