Meaning of concentric

1. The target had three concentric circles, each representing a different point value.
2. The city's design featured concentric rings of roads around the central plaza.
3. The tree's growth rings were perfectly concentric, indicating healthy growth.
4. The artist created a series of paintings with concentric circles radiating outwards.
5. The scientist observed the concentric layers of rock in the canyon walls.
6. The Russian nesting dolls were painted with intricate concentric patterns.
7. The architect designed a building with concentric layers of glass that reflected the sunlight.
8. The bull's-eye on the dartboard is a perfect example of concentric circles.
9. The geologist explained how the concentric patterns in the rock formations were created.
10. The psychologist discussed the concept of concentric circles of influence in social relationships.