Final answer:
Spaces became like stages in the Baroque period through the use of theatrical and visual techniques such as perspective, chiaroscuro, and foreshortening. Baroque art engaged viewers by creating dramatic and intense spaces that broke down the barrier between the painting and the audience.
Step-by-step explanation:
The use of spaces as stages in the Baroque period was influenced by the theatrical and visual innovations of the Renaissance. During this time, artists and architects developed techniques such as perspective and chiaroscuro to create depth, drama, and intense light and shadow in their works. Baroque art, known for its intense piety and dramatic poses, used these techniques to create theatrical spaces that engaged the viewer and broke down the barrier between the painting and the audience. By using foreshortening and placing figures close to the foreground, Baroque artists made the viewer feel like a part of the painting.