quadrilateral
Yes, it is. A Quadrangle is just another word for Quadrilateral (a four sided polygon).
Square.
Another word is shape. A polygon is a shape with different kinds of sides.
The plane square is a special form of diamond, kite, parallelogram, polygon, quadrilateral, rectangle, rhombus or trapezoid. You could add: tetragon.
A 12 sided polygon
Polygon, for many-sided.
Polygon
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A square is a Polygon, because it has no curves, 4 sided figure, and it has 4 vertices
No. The word "polygon" itself just means "many sides". A square is a special polygon with four equal sides and four right angles.
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