'2' . From opposite corners.
A diagonal line of a polygon is a line that joins any two vertices not already joined by a side. A polygon with n sides has n(n-3)/2 diagonals → an octagon has 8(8-3)/2 = 8 × 5 ÷ 2 = 20 diagonals
It has 2
Well a parallelogram is a 4 sided shape with 2 pairs of parallel lines, hence PARALLELogram. That's the reason, because there are two pairs of parallel lines.
Not necessarily. If the sides are a multiple of sqrt(2) units, then the diagonal is rational.
The question does not make sense since here is not onlyoone such letter. A, K, M, W, X and Y all have two diagonal straight lines! If your question is "What is the letter with only 2 diagonal lines, then the answer is "V". This letter was omitted by Mr. Mehta.
A heptagon has 4 diagonal lines and 7 sides and it has 2 congruent diagonal lines and 2 congruent triangles
2
their would be still 2 diagonal lines * * * * * There are 8*(8-3)/2 = 8*5/2 = 20 lines joining two vertices. That being the conventional definition of a diagonal, there are 20 diagonals.
Yes its 2 diagonal intersect at right angles
Isosceles
the answer would be 2
2
'2' . From opposite corners.
65. The equation to figure the number of diagonal lines for any polygon is n(n-3)/2. n= number of vertices
A polygon with n vertices has n*(n-3)/2 diagonals. Therefore, a pentagon, which has 5 vertices, has 5*(5-3)/2 = 5 diagonals.
Isosceles