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Q: Are circles polygons

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circles, ellipses

yes. polygons are closed shapes with no curves. i.e. circles are not polygons, squares are, triangles are, ect

no straight sides

They're both polygons and shapes.

A circle is not a polygon, so no.

a polygon has all closed sides and no curved sides

They are closed 2-dimensional shapes.

Circles and all regular polygons.

A polygon is a two-dimensional shape enclosed by lines only, not curves. So triangles, squares, rectangles, and octagons are examples of polygons. Circles, ellipses, and annuli are some shapes that are not polygons.

Your quesion makes no sense. Please elaborate, and i will do my best to provide an answer. You need to tell me what your are comparing polygons to. Ex: What are 4 thing polygons and CIRCLES have in common. your sentence lacks that.

There are 20.5 + 6 + 9 = 20 (Neither circles nor unclosed linear shapes are polygons.)

Some examples of polygons include circles, triangles, squares, rectangles, pentagons, and hexagons. These are examples of 'simple polygons,' in that none of the lines overlap and intersect each other, such as in a pentagram, which is a 'star polygon.'

Circles, some triangles, and irregular polygons

A polyhedron is a 3 dimensional figure made of polygons. A cylinder is made of two circles and a rectangle around the middle. Since circles are not considered polygons (don't have straight edges), a cylinder cannot be a polyhedron. I just had a discussion about this with my math students today.

There are many shapes: circles, ellipses, ovals (elongated circles), cardioids, any shape with a "hole" in it such as a annulus.Polygons will tessellate if combined with other suitable polygons.

The four basic shapes, or "repeat units," from which the more complicated patterns are constructed are: circles and interlaced circles; squares or four-sided polygons; the ubiquitous star pattern, ultimately derived from squares and triangles inscribed in a circle; and multisided polygons.

Archimedes (287-212 BC) was the first to estimate π rigorously. He realized that its magnitude can be bounded from below and above by inscribing circles in regular polygons and calculating the outer and inner polygons' respective perimeters. By using the equivalent of 96-sided polygons, he proved that 310/71< π < 31/7. The average of these values is about 3.14185.

1. circles 2. triangles 3. squares 4. any of the polygons

They are geometric shapes called polygons

Depends on the shape. There are different formulae for different shapes: triangles, quadrilaterals, regular polygons, circles, ellipses.

Triangles, Circles, Ellipses Only triangle if you only want polygons.

for polygons, add up the lengths of all the sides. for circles, multiply the diameter of the circle squared by pi (3.14)

Prisms have polygons as bases whereas cylinders have circles as bases. In a way, a cylinder is like a circular prism.

Shapes such as circles, regular pentagons, and heptagons.Most regular polygons will not tessellate on their own. Only triangles, squares and hexagons will.With irregular polygons there is more of a choice. All isosceles or scalene triangles, parallelograms, trapeziums and kites will tessellate as will some higher order polygons.

It was Archimedes.