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A regular decagon has 10 equal sides.

Q: How many conguent sides does a regular decagon have?

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It still has ten sides, same as a normal decagon. "Irregular" simply means that all the sides and angles of the decagon are not congruent.

A decagon has 10 sides

There are 10 sides on a decagon

Its not a do-decagon its a dodecahedran!!

Decagon is 10 sides. Octagon is 8 sides.

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A decagon is a 10 sided polygon

10

It still has ten sides, same as a normal decagon. "Irregular" simply means that all the sides and angles of the decagon are not congruent.

A regular decagon has 10 sides. See link.

There need not be any but there can be any number up to ten.

A decagon has 10 sides. Any regular polygon with four or more sides will have pairs of sides that are parallel. A decagon will have 5 pairs of parallel sides.

It still has ten sides, same as a normal decagon. "Irregular" simply means that all the sides and angles of the decagon are not congruent.

A regular decagon will have 5 pairs of parallel sides, however, irregular decagons can have no parallel sides.

A decagon has 10 sides. Any regular polygon with four or more sides will have pairs of sides that are parallel. A decagon will have 5 pairs of parallel sides.

A decagon has 10 sides, and 10 angles. The sum of the interior angles of a decagon is (10-2)×180° = 1440° In a regular decagon all the angles are congruent at 1440° ÷ 10 = 144°

A decagon has 10 sides

A decagon has 10 sides