Crossword puzzle clue "shape whose internal angles are all 144"

Here are the possible solutions for shape whose internal angles are all 144 clue

Answer
Clue
Relevancy
decagon
Clue
Shape whose internal angles are all 144°
Shape whose regular version has 144-degree internal angles
If it's regular, each of its angles is 144 degrees
Definition
a plane figure with ten equal sides
decagonal
Clue
Having all angles equal to 144 degrees
Definition
of a plane figure, having ten sides
hexagon
Clue
Its internal angles total 720 degrees
Definition
a polygon having six sides
nonagon
Clue
Its internal angles total 1,260 degrees
A regular one has internal angles of 140 degrees
Shape whose interior angles total 1,260 degrees
Definition
a nine-sided polygon

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