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The names of polygons are:

3: triangle

4: quadrilateral

5: pentagon

6: hexagon

7: heptagon

8: octagon

9: nonagon or enneagon

10: decagon

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Q: What are the names of 2d shapes from 3 sides to 10 sides?
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What are some names of 2d shapes and the number of sides for each?

All regular polygons (in order of sides starting with 3 sides): triangle, square, pentagon, hexagon, octagon, nonagon, decagon, hendecagon, dodecagon, tridecagon, tetradecagon, pentradecogon, hexadecagon, octadecagon, enneadecagon, icosagon (twenty sides).2d shapes are shapes that can be drawn on a paper, like lines, triangles, squares, rectangles, circles, etc. Some of these shapes are called polygons, and there are countless numbers of them with their names based on the Greek word for the number of sides on each shape. All sides are exactly the same as each other on regular polygons; one or more sides are different from the other sides on irregular polygons. A few of the polygon names, with the name following the number of sides on the 2d shape are:3 triangle4 quadrilateral (a regular quadrilateral is a square)5 pentagon6 hexagon10 decagon12 dodecagon20 Icosagon90 enneacontagonAfter about 10 sides mathematicians usually refer to polygons as n-gons; a 12 sided polygon (dodecagon) could also be called a 12-gon.In addition to polygons, there are circles, ovals, parabolas, and many other shapes that do not have straight sides.


What 2D shape has 10 sides?

It is the decagon.


Are edges sides?

Edges are sides in terms of 2D shapes but they are the place where two sides of a 3D shape meet ie. the sharp edge that runs between corners


What are all of the 2d shapes?

There are infinitely many 2d shapes so it is impossible to list them all.


How many 2D shapes are there and what are they?

There are infinitely many. Amongst them are: Circle, ellipse, annulus (disk), Triangle, quadrilateral, pentagon, hexagon, and polygons with more sides, Semicircles, quadrants, octants, and other combinations of the above, Irregular 2d shapes - like a blob.

Related questions

What is 2D shape does not have equal sides?

2d shapes that do not have equal sides do not usually have special names.


Which 2d shapes have no equal sides?

rectangle


What 2D shapes have 3 sides?

Triangles


What are the names and picture of all of the 2d shapes?

There are infinitely many shapes and not all of them have names.


Names of 3D and 2D shapes?

hello


Which 2d shapes have 7 sides?

A septagon or a heptagon


What 2d shapes has 6 sides?

Hectogon


In 2d shapes how many sides does a square have?

the answer is 8


What kind of 2d shapes have all sides equal?

Squares


What shapes have 9 sides?

2D - Nonagon 3D - Nonahedron


What 2D Shapes have equal sides?

isoceles triandle, square


Do any 2D shapes have no straight sides but have right angles?

No