Myocarditis is a disease marked by the inflammation of the heart muscle known as the myocardium â the muscular layer of the heart wall. This muscle is responsible for contracting and relaxing to pump blood in and out of the heart and to the rest of the body. When this muscle becomes inflamed, its ability to pump blood becomes less effective.
Line Symmetry. shape has line symmetry when one half. of it is the mirror image of the other half. Symmetry exists all around us and many people see it as being a thing of beauty. Symmetry is...
Axis of symmetry. This is a line about which a shape is symmetrical. That is, the shape on one side of the line is a mirror image of the shape on the other. The shape could be the graph of a function or a physical object. On the left below we can see that a parabola (graph of y=ax2+bx+c) has a vertical line of symmetry running through its vertex. On the right, a photo of a face has an axis of symmetry down the center.