Q: What is a 90 sided polygon?

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A 90-sided polygon is called an enneacontagon.

The name of a 51 sided polygon is Pentaconhenagon. The name of a 52 sided polygon is Pentacondigon. The name of a 53 sided polygon is Pentacontrigon. The name of a 54 sided polygon is Pentacontetragon. The name of a 55 sided polygon is Pentaconpentagon. The name of a 56 sided polygon is Pentaconheptagon. The name of a 57 sided polygon is Pentaconhexagon. The name of a 58 sided polygon is Pentaconoctagon. The name of a 59 sided polygon is Pentaconenneagon.

hecta- is the prefix for 100, so probably hectagon.But a 90 sided polygon is Enneacontagon

A five sided polygon is called a pentagon because pentagon means five sided polygon I think.

An 11 sided polygon is a hendecagon and a 12 sided polygon is a dodecagon

Related questions

A 90-sided polygon is called an enneacontagon.

There are 90 diagonals in a 15-sided polygon.

90-gon

There is no such polygon that has 95 diagonals because a 15 sided polygon has 90 diagonals and a 16 sided polygon has 104 diagonals.

The name of a 51 sided polygon is Pentaconhenagon. The name of a 52 sided polygon is Pentacondigon. The name of a 53 sided polygon is Pentacontrigon. The name of a 54 sided polygon is Pentacontetragon. The name of a 55 sided polygon is Pentaconpentagon. The name of a 56 sided polygon is Pentaconheptagon. The name of a 57 sided polygon is Pentaconhexagon. The name of a 58 sided polygon is Pentaconoctagon. The name of a 59 sided polygon is Pentaconenneagon.

11

I find the name "30-sided polygon", "40-sided polygon", etc. just fine.

hecta- is the prefix for 100, so probably hectagon.But a 90 sided polygon is Enneacontagon

You can name any polygon as ( )-gon, so in this case, it would be 90-gon.

90 x (2 x 15 - 4) ie 90 x 26 = 2340o. The sum of the interior angles of an n-sided polygon always is 90 x (2n - 4) degrees

It can be an obtuse triangle.

One billion-sided polygon = GIGAGON