How many diagonals are there in a optagon,Pentagon, Hexagon​

Question

How many diagonals are there in a optagon,Pentagon, Hexagon​

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Melody 1 week 2021-09-07T03:58:51+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-07T04:00:19+00:00

    Answer:

    hexagon has 9 diagonals, octagon has 20 diagonals , pentagon has5 diagonals

    Step-by-step explanation:

    formula for no. of diagonals:-

     \frac{number \: of \: sides (number \: of \: sides - 3)}{2}

    0
    2021-09-07T04:00:34+00:00

    Answer:

     \huge\mathbb\red{Answer:-}

    Octagon = 20 diagonals

    Pentagon = 5 diagonal

    Hexagon = 9 diagonal

     \huge\mathbb\red{</u><u>E</u><u>x</u><u>p</u><u>l</u><u>a</u><u>n</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u><u>:-}

    Octagon= an octagon has 8(8−3)/2 = 8×5/2 = 20 diagonals.

    Pentagon= Beware of counting a diagonal more than once.

    Beware of counting a diagonal more than once.For example, a pentagon (5 sides) has only 5 diagonals. Each vertex has two diagonals, so if you counted each diagonal from every vertex twice, you might think there were 10 diagonals.

    Hexagon = A hexagon has 9 diagonals. A diagonal of a polygon is a line segment that runs from one vertex of the polygon to another vertex, excluding the sides…

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