Gas trapped in the bend of the colon lying near the spleen (splenic flexure) can cause pain in the left upper abdomen or in the left lower chest. Other symptoms and signs of the so called splenic flexure syndrome include: 1  Distension of the upper abdomen, which can be tender to touch or not.
SVG contains the following set of basic shape elements: 1  rectangles (including optional rounded corners), created with the ârectâ element, 2  circles, created with the âcircleâ element, 3  ellipses, created with the âellipseâ element,  straight lines, created with the âlineâ 1  element, polylines, created with the âpolylineâ element,  and.
Definition of a Polygon. A polygon is any 2-dimensional shape formed with straight lines. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. The name tells you how many sides the shape has. For example, a triangle has three sides, and a quadrilateral has four sides. So, any shape that can be drawn by connecting three straight lines is called a triangle, and any shape that can be drawn by connecting four straight lines is called a quadrilateral. All of these shapes are polygons.