The first syllable in "polygon" is stressed: POL-y-gon. While this is true for many words that begin with the prefix "poly", note that it is not true for all such words. For example, the adjectival form, polygonal, has its stress on the second syllable: po-LI-go-nal.
it seems to me that the only polygon of your description is a square
A type of polygon is a rhombusial polygon, trysectalnict polygon, and a equilateral polygon.
A triangle (not traingle) is a polygon. It can be a regular polygon but need not be.
an arrow is or isn't a polygon?
Polygon B is an octagon.
Footprint is stressed on the first syllable.
The second syllable (-ta-) is the stressed syllable in potato.
The stressed syllable in the word "contentment" is the second syllable, "tent."
No, "rejoiced" is not a word with a stressed syllable. The stress falls on the second syllable, "joiced."
Behave is stressed on the second syllable.
Tomorrow has a stressed first syllable ("to-") and an unstressed second syllable ("-morrow").
Yes the word orphan has a stressed syllable. Orphan is stressed on the first syllable.
Yes, "deliver" is stressed on the second syllable: de-LIV-er.
Yes the word language has a stressed syllable. Language is stressed on the first syllable.
Yes the word trophy has a stressed syllable. Trophy is stressed on the first syllable.
It is not entirely clear whether you are asking which syllable is stressed or what the first syllable is. The stressed syllable is the first syllable: sev.
Captive is stressed on the first syllable.