1/2*(n2-3n) where n is the number of sides of the polygon
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The formula for finding the diagonals of any polygon is: 0.5*(n2-3n) where n = the number of sides. A trapezoid has 4 sides so: 0.5*(16-12) = 2 diagonals
A line that joins any vertex of a polygon (or polyhedron) to any vertex other than itself or adjacent ones is a diagonal.
65. The equation to figure the number of diagonal lines for any polygon is n(n-3)/2. n= number of vertices
It is a diagonal.
It is a diagonal.