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
Patriarchal cross rejected and mocked Jesus and therefore descended into Hades. Many symbolic interpretations of the double cross have been put forth. One of them says that the first horizontal line symbolized the secular power and the other horizontal line the ecclesiastic power of Byzantine emperors. Also, that the first cross bar represents the death and the second cross the resurrection of Jesus Christ. The Russian cross can be considered a modified version of the Patriarchal cross, having two smaller crossbeams, one at the top and one near the bottom, in addition to the longer crossbeam. One suggestion is the lower crossbeam