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 Lateran Cross Papal Lateran Cross The Papal Lateran Cross () is a medal for recognition of merit bestowed by the Holy See. The Lateran Cross was commissioned by Pope Leo XIII, and instituted on February 18, 1903. The distinction was created as a recognition of merit, and is named in honor of the Basilica of St. John in Lateran in Rome. Initially, it was awarded for donations regarding the restoration of the Lateran Basilica. The distribution of the award was continued after the completion of the restoration process. Paul VI ended the awarding of the Lateran Cross in 1977. The decoration consists