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How many diagonal lines does a decagon have?

Updated: 12/13/2022

Wiki User

∙ 7y ago

Best Answer

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

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∙ 7y ago

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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 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

How many symmetry lines dose a decagon shape has?

6

Related questions

How many diagonal lines can be in a ten sided figure?

A decagon has 35 diagonals

How many diagonal lines can be drawn inside a figure with ten sides?

There are 35 diagonals inside a decagon

How many diagonal in a regular decagon?

35 diagonals

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 parallel lines does an decagon have?

A regular decagon would have five sets or parallel lines.

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 on a decagon?

10 lines of symmetry

How many lines of symetry are in a decagon?

10

How many diagonal lines are there in a heptagon?

A heptagon has 4 diagonal lines and 7 sides and it has 2 congruent diagonal lines and 2 congruent triangles

How many diagonal for the hexagon?

There are four diagonal lines in a hexagon.

How many lines of symmetry does a regular decagon have?

10

How many lines of symmetry does regular decagon have?

Ten.

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