Acity grid of anytown, usa is shown on the grid below. the fire department is represented by quadrilateral rstu. another fire department is opening in a different part of the city to maximize fire protection. the size of the new department's property must be congruent to the older department. vertices a and b are plotted on the grid below to represent two vertices of the new fire department quadrilateral abcd: map of anytown. the line y equals 7 is main road. the line y equals 3 is rose lane. the line y equals negative 1 is crystal avenue. the line x equals negative 4 is brick street. the diagonal line is dogwood drive. old fire department forms quadrilateral with ordered pairs r at negative 4, 7, s at negative 1, 7, t at negative 1, 3, u at negative 4, 3, a is at 4, negative 1 and b is at 1, negative 1. what could be the ordered pairs representing vertices c and d of quadrilateral abcd so that the new fire department is congruent to the old fire department?