Periodically earth passes through their orbit. Trending Questions What latitude is the sun directly over head on march 20th? What is an old very dense hot star that is cooling called? Describe how images from space of Earth and other objects are useful? Why does the solar nebula theory predict that planetary systems are common? What is the answer for Rain Forest Is To Tree As Solar System Is To? What celestial space objects can a meteoroid come from and what causes a meteor? What is a star that has shed its outer layers which become a big cloud of gas and dust? What are all of the planets in john carter named? What two groups of stars can have similar brightness? Is the earth cooler when there are less sunspots? What is in orbit outside the solar system past neptune. Now, the area of a triangle is half of the base times height, so: Area of one triangle base × height / 2 side × apothem / 2. the 'height' of the triangle is the 'Apothem' of the polygon. Therefore a 69 sided shape would be hexakontakaienneagon We can learn a lot about regular polygons by breaking them into triangles like this: Notice that: the 'base' of the triangle is one side of the polygon. This is all followed by the Ancient Greek word gon -os - oi (however English does not used declensions so it just becomes -gon) Shape names are often slightly angelised (ikosi instead of eikosi) and go in order of largest to smallest like English To form compund numbers use 'kai' between each number and go smallest to largest or largest to smallest The numbers 11 and 12 are compounds of the numbers above:ġ1-(h)enadeka (1 10), 12 d(u)odeka (2 10)ġ3-19 are the same but have the Ancient Greek word 'kai' (and) between the two numbersĢ0 is eikosi but other than that the tens are the numbers above plus -kontaġ00 is (h)ekaton but the other 100s just as above but using -kosioi instead of -konta The first part dependent on the number of sides/angles/vertices and is simply the equivalent number in Ancient Greek:ġ-(h)ena 2-duo 3-tria 4-tetra 5-penta 6-hexa 7-hepta 8-octa 9-(h)ennea 10-deka Length = $\frac$ or 3.14 (approx.Shape names are entirely based on Ancient Greek. Since, Area of a rectangle = Length x Breadth, But, if only the length or breadth and area are given, is it possible to know the breadth of the rectangle? Let us find out. We now know how to calculate the area if we have the length and the breadth of a rectangle. The area of this rectangle is given by 8 7 7 = 56 cm 2.Īrea of a rectangle = length x breadth How to calculate the length and breadth of a rectangle using its area? Each small square stands for 1 square centimetre, that is, each small square is cm on each side. Here we have a rectangle, covered with small squares. Polygons are classified according to the number of sides as follows: Number of Sides or VerticesĪ rectangle is a type of quadrilateral that equal opposite sides and four right angles. Let us see how to calculate the area of some polygons. A regular polygon is a polygon whose all sides and all angles are equal. Similarly, the Pentagon has 5 sides as “Penta” means 5. For example, a triangle has 3 sides, as “Tri” means 3. The name of the shape tells us the number of sides it has. Triangles, quadrilaterals, pentagons, hexagons, octagons are all examples of polygons. In other words, a closed figure formed a three or more line segment is called a polygon. No two line segments with a common endpoint are coincident.No line segments intersect except at their endpoints.How to calculate the length and breadth of a rectangle using its area?Ī polygon is a closed curve (figure) formed by the line segments such that:.
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