Which two lowercase letters are part of the same letter family?

The pair of lowercase letters 'a' and 'g' belong to the same letter family because they share similar structural characteristics that classify them within the same grouping. In calligraphy and typography, letter families are often defined by the shapes and forms of the letters, particularly focusing on how they are constructed.

For 'a' and 'g', both letters feature rounded forms and have similar curves, which is a key attribute of their design. The lowercase 'a' has a distinctive open loop, while the lowercase 'g' features a similar rounded form with a descender that curls back upwards. This shared stylistic approach connects them as part of the same family in a typographical sense.

In contrast, the other pairs do not exhibit the same structural similarities. For instance, the letters 'g' and 'y' have different shapes and characteristics, with 'g' being a rounded form while 'y' has a more angular appearance. Similarly, 'b' and 'd' are mirror images of each other but do not share the roundness characteristic of the chosen pair. Lastly, 'p' and 'q' may appear similar in terms of structure since they are also mirror images, but they lack the shared rounded characteristics found in 'a'