A rectangle on a coordinate plane has vertices Q(-1, 1), R(6, 1), S(6, Negative 8), and T(-1, -8). What are the dimensions of the rectangle? A) The base is 6 and the height is 9.
B) The base is 9 and the height is 6.
C) The base is 7 and the height is 9.
D) The base is 9 and the height is 7.

Base is 7, and Height is 9.

Step-by-step - If we consider any two pairs of points and the y-coordinates of these two points are constant (are the same), then that side forms one of the bases of the rectangle.

Consider, Q(-1, 1) and R(6, 1)

The y-values are the same.

The base of the rectangle is the absolute value of difference in the x-values.

We could have also used S(6,-8), and T(-1,-8) to obtain the same result.

For R(6, 1) and S(6,-8), the x-coordinates are the same. The height is the absolute values of difference in the y-values.

Therefore, the base is 7 and the height is 9.

Step-by-step explanation:

it would open into a square depending on the type of envelope i’m not sure about the second part