A rhombus is always a polygon belonging to the class of 4 sided polygons known as quadrilaterals
A circle can be a polygon. Sometimes a circle can be a polygon that has infinite number of sides.
deh losers a shape
A circle is NOT a polygon, because a polygon is composed of straight line segments, and a polygon DOES NOT have rounded sides. BUT! I read this on the internet, that SOMETIMES a circle is considered a polygon with infinite number of sides.
it is not a line segment
A heptagon sometimes called a septagon.
A circle can be a polygon. Sometimes a circle can be a polygon that has infinite number of sides.
deh losers a shape
A circle is NOT a polygon, because a polygon is composed of straight line segments, and a polygon DOES NOT have rounded sides. BUT! I read this on the internet, that SOMETIMES a circle is considered a polygon with infinite number of sides.
A rectangle is always a 4 sided polygon known as a quadrilateral.
polygon, sometimes a parallelogram
it is not a line segment
A heptagon sometimes called a septagon.
All polygons can be irregular sense the requirements for a polygon to be irregular is for 1 or more sides to be unequal to the others. So a pentagon is sometimes a regular polygon. Hope that answers your question.
A 17 sided polygon is called a heptadecagon. It is also sometimes referred to as a heptakaidecagon
half-sphere hemisphere
If the measure of an interior angle of a regular polygon is 140o, the polygon is a nonagon (sometimes called an ennagon) having 9 sides.
A polygon is a closed figure with 3 or more sides/angles, and the lines must always be straight. A circle isn't a polygon. Quadrilaterals are always polygons but polygons are not always quadrilaterals. So the answer is "sometimes."