What do you call a shape with 7 or 9 points?

Triangle= trigon
Square= quadragon
5 points= hectagon
6 points= hexagon
7 points=?
8 points= octagon
9 points= ?
10 points= decagon

These are all concidered polygons right?

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SomeMichGuy · M

Triangle is a 3-point, 3-sided plane figure.

Square is special, not a general name for any 4-point/4-sided plane figure (quadrilateral).

GuyWithOpinions · 31-35, M

@SomeMichGuy a quadragon could be a kite, square, rectangle or trapazoid. It just means 4 pointed shape.

SomeMichGuy · M

@GuyWithOpinions Yes but all 4-pointed shapes are not squares.

GuyWithOpinions · 31-35, M

@SomeMichGuy no, but a square = quadragon

SomeMichGuy · M

@GuyWithOpinions A square is a subset of 4-pointed/4-sided plane figures, yes, but it is not the generic term for such a figure (it's actually a degenerate quadrilateral).

A triangle IS a generic terms for a 3-pointed/3-sided plane figure with straight sides.

GuyWithOpinions · 31-35, M

@SomeMichGuy a triangle is a shape. A trigon is any polygon with 3 points. But the only shape you can make with 3 points is a triangle 🤯

SomeMichGuy · M

@GuyWithOpinions A polygon is a superset of shapes.

A triangle is the only polygon of 3 sides/vertices.

Yes