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

Answer 1

To find the area of a triangle on a coordinate grid, you can use the formula:

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

From what you've mentioned, Luella multiplies \( \frac{1}{2} \) by \( 2 \). This suggests that the base of the triangle is \( 2 \) units long. Now, to complete the formula, she needs to multiply this product by the height of the triangle.

So, the calculation so far gives:

\[ \frac{1}{2} \times 2 = 1 \]

Now to get the area, she needs to multiply \( 1 \) by the height of the triangle. Thus, the number Luella can use to complete her calculation of the area is the height of the triangle.

So, Luella should use the height of the triangle to finish her area calculation.