Cross section (geometry) of Earth at right. Cross-sections are often used in anatomy to illustrate the inner structure of an organ, as shown at left. A cross-section of a tree trunk, as shown at left, reveals growth rings that can be used to find the age of the tree and the temporal properties of its environment. Cross section (geometry) In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces. Cutting an object into slices creates many parallel cross sections. The boundary of a cross section in
Papal shoes shoe is very thin-soled and is sometimes called "pantofola liscia" or smooth slipper model. After 1958, Pope John XXIII added gold buckles to the outdoor papal shoes, making them similar to the red shoes worn by cardinals outside of Rome. Pope Paul VI eliminated the gold cross and completely discontinued the custom of kissing the papal foot. Paul VI can be seen wearing red buckled shoes in photographs from his 1964 trip to Jerusalem. In 1969, Paul VI abolished buckles from all ecclesiastical shoes, which had been customarily required at the Papal Court and for prelates. He also discontinued the