WebWe can find the number of diagonals of the given polygon with the formula, Number of diagonals = n(n-3)/2. Substituting the value of n = 15. n(n-3)/2 = 15(15-3)/2 = (15 × 12)/2 = 90. Therefore, the polygon has 90 diagonals. Ques 2. Determine the diagonal of a rhombus whose area is 50cm2 and one of its diagonal measures is 7cm. WebA Polygon is a closed figure made up of line segments (not curves) in a two-dimensional plane. Polygon is the combination of two words, i.e. poly (means many) and gon (means sides). A minimum of three line segments is required to connect end to end, to make a closed figure. Thus a polygon with a minimum of three sides is known as Triangle and ...
Diagonals: Formula, Length, Diagonals of Shapes, Examples
WebDiagonals of a Polygon: The diagonal of a polygon are lines that can be drawn between any two vertices that are not already connected by a side. The vertices are the places where the two lines of an angle meet. ... This lesson explains the diagonals of a polygon. Learn about a polygon's formula, how to find it, and see examples. Related to this ... WebCorrect answer: Explanation: Construct two other diagonals as shown. Each of the interior angles of a regular octagon have measure , so it can be shown that is a 45-45-90 triangle. Its hypotenuse is , whose length is 8, so, by the 45-45-90 Triangle Theorem, the length of is 8 divided by : Likewise, . Since Quadrilateral is a rectangle, . green ocean scallops
How many diagonals does a regular pentagon has?
Web31. A rhombus has diagonals of length 8 cm and 4 cm. What is its perimeter? Round to the nearest tenth of a centimeter. (a) 16.0 cm (b) 21.2 cm (c) 17.9 cm (d) 20.0 cm (e) 22.4 cm 32. A traditional soccer ball is a polyhedron called a truncated icosahed ron. A truncated icosahedron has 12 regular pentagon and 20 regular hexagon faces. WebArea of a pentagon = 1 4 5 ( 5 + 2 5) ( P 2 5 ) ⇒ Area of a pentagon = 1 4 5 ( 5 + 2 5) x P x P 25. ⇒ Area of a pentagon = 5 ( 5 + 2 5) x P x P 100 which is our formula for finding … WebNov 22, 2024 · To calculate the height and diagonal of a regular pentagon, all you need to have given is the side length a: diagonal = a × (1 + √5) / … green ocean strategy คือ