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Subjects>Math>Math & Arithmetic

How many diagonal lines does a decagon have?

Anonymous

∙ 7y ago

Updated: 12/13/2022

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

→ a decagon has 10(10-3)/2 = 10 × 7 ÷ 2 = 35 diagonals

Wiki User

∙ 7y ago

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Continue Learning about Math & Arithmetic

How many lines of symmetry does a decagon?

A decagon need not have any lines of symmetry. It can also have 1 or 10 lines of symmetry.

How many lines of symmetry does a decagon have?

A decagon need not have any lines of symmetry. It can have 10.

How many lines of symmetry does regular decagon have?

Ten.

How many symmetry lines dose a decagon shape has?

6

How many facts does a decagon have?

A decagon is a 10 sided polygon Exterior angles add up to 360 degrees Interior angles add up to 1440 degrees It has 35 diagonal A decagon can have a regular or an irregular shape

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