Final answer:
The structures described in the question can be named as follows: skeletal model, zig-zag line with one peak and one valley, and a 5-sided polygon.
Step-by-step explanation:
The structures described in the question can be named as follows:
- Skeletal model: In organic chemistry, a skeletal model is a simplified representation of a molecule where carbon atoms are represented by each end or bend in a line, and hydrogen atoms may not be shown if they are attached to a carbon.
- Zig-zag line with one peak and one valley: This could represent a molecule with a linear shape, where the atoms are arranged in a straight line.
- 5-sided polygon: This could represent a molecule with a trigonal planar shape, where the central atom is bonded to three other atoms in a flat, triangular arrangement.