Answer:
The parallel at 23º north latitude is the Tropic of Cancer, while the parallel at 23º south latitude is the Tropic of Capricorn.
Step-by-step explanation:
The Tropic of Cancer is located at latitude 23º N, being the northern limit of the intertropical zone. In turn, the Tropic of Capricorn, located at latitude 23º S, marks the southern limit of this area. The tropics are the imaginary lines on which, at the summer solstice (June in the northern hemisphere and December in the southern hemisphere) the sun's rays descend vertically, as long as they are just below the solar orbit at that time.