The answer you may be looking for is "focus"
Answer:
okay i know im a little late but its form because its something you could move around since its not flat it can be pyramids , spheres ,cones ect. and another term for 3 dimensions is 3D so the object is basically real life like a cup or a box (( sorry im not the best at explaining))
Explanation:
The second movement of the fantastic symphony is a waltz.(The most popular dance in the romantic era)
Vaulted ceiling, stained glass