Nov. 14, 2011 -- Mini strokes, with symptoms that last just a few minutes or hours, are well-recognized warning signs for potentially deadly larger strokes. Now new research confirms that they are associated with a lower life expectancy.
A cross section is the shape we get when cutting straight through an object. The cross section of this object is a triangle. It is like a view into the inside of something made by cutting through it.
1 When you look at the crystal on-end, the cross section is a hexagon. 2  Trigonal-possess a single 3-fold axis of rotation instead of the 6-fold axis of the hexagonal division. 3  Triclinic-usually not symmetrical from one side to the other, which can lead to some fairly strange shapes.