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 Papal shoes The Papal shoes were the red leather outdoor shoes worn by the Pope. They should not be confused with the indoor Papal Slippers or the Episcopal sandals, which are the liturgical footwear proper to all ordained Catholic bishops of the Latin Rite. As did many noblemen, the Pope wore slippers ("pantofole") inside his residences and leather shoes outside. The indoor Papal Slippers were made of red velvet or silk and were heavily decorated in gold braid, with a gold cross in the middle. Throughout Church history, the color red has been deliberately chosen to represent the blood of