Incorrect. For the architect to use the Pythagorean Theorem, $\displaystyle{{c}}^{{2}}={{a}}^{{2}}+{{b}}^{{2}}\usepackage{cmbright}\Huge\$ , to find the length of the walkway, the walkway needs to be part of a right triangle. Look at the diagram again. If the walkway is the hypotenuse of the right triangle, which two streets must be the legs?