Regular Nonagon Math
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Nonagon nona gon where nona means nine and gon means sides.
Regular nonagon math. A nonagon has nine vertices corners. The regular nonagon cannot be constructed using the classical greek rules of geometric construction but conway and guy 1996 give a neusis construction based on angle trisection. The area of a regular nonagon of side length a is given by a frac 9 4 a 2 cot frac pi 9 simeq6 18182 a 2. The blue line segments ac and bd are its diagonals.
A polygon with 9 sides try this adjust the nonagon below by dragging any orange dot. The given nonagon abcdefghi has sides ab bc cd de ef fg gh hi and ia and angles a b c d e f g h and i. Angles of a regular nonagon since each of the nine interior angles in a regular nonagon are equal in measure each interior angle measures 1260 9 140 as shown below. In a regular nonagon each inside angle is 140.
A short line in the middle of each side of a shape means that the sides are all the same length. A regular nonagon has internal angles of 140. A regular nonagon is a nonagon in which all sides have equal length and all interior angles have equal measure. A nonagon is a polygon made up of 9 sides and 9 angles.
Although a regular nonagon is not constructible with compass and straightedge there are methods of constructing that are very close approximations. A regular nonagon has nine equal sides and nine equal interior angles.
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