Definition of Coplanar. Set of points, or lines or line segments or rays or geometrical shapes which lie on the same plane are said to be co-planar. In the above diagram, we can see that two planes intersect ( meet ) along a line. The points A and B are on one plane and the points M and N are another plane.
A4 paper is the size most used in the world. The dimensions of A4 is 297 x 210 mm or 11.69 x 8.27 inches. It has an area of 0.062 mÂ², which corresponds to 0.07 square yards, 0.65 square foot, or 93 square inches.When usual and recommended printing margins are put, the printable size of A4 is 247 x 170 mm.he dimensions of A4 is 297 x 210 mm or 11.69 x 8.27 inches. It has an area of 0.062 mÂ², which corresponds to 0.07 square yards, 0.65 square foot, or 93 square inches. When usual and recommended printing margins are put, the printable size of A4 is 247 x 170 mm.
Its printable surface is reduced when applying the usual print margins: 160 x 108 mm. The surface of an A5 sheet is 0.031 mÂ², or 0.04 square yard, 0.32 square foot, or 46.5 square inches. This size can still be used for writing, it also often comes in notebook. The A5 is a dual A6, and an A7 quad.Conversely, it is half an A4 and quarter an A3. Calculating its weight is easy, knowing that it is 32 times smaller than A0 (or 1 mÂ²). The weight of the paper being always applied in g/mÂ², for a paper of 100 g/mÂ², an A5 sheet is 100/32 = 3.125 grams.hus, we obtain an homothetic system with a â2 ratio, which means that the A5 is obtained by folding an A4 in its width direction. This proportion is still preserved, which also keeps the contents of the sheet at the time of its enlargement.