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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.
