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Names of 2D Shapes

since curves can take any shape and can be irregular, then they cant have a single description, so there are many names approximating their shapes. Take a look at this web site htt...
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two-dimensional shape is strictly equal to two-dimensional shape. two-dimensional shape (a shape in two spatial dimensions)
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the pentagon, in washington dc
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Icosagon or you can call it a 20-gon. (the 'n-gon' way of naming things keeps things very simple) Source(s): http://en.wikipedia.org/wiki/Polygon#Nam… I teach mathematics
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A regular ten sided figure is known as a regular decagon. This is 2 D. A decahedron is a polyhedron having 10 faces. That is 3D. Hope this clarifies the matter. All the best.
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Useful sites about:

Names of 2D Shapes

2D Shapes - Polygons and More - Math is Fun
2D Shapes. Regular Polygons. A polygon is a plane (2D) shape with straight sides. To be a regular polygon all the sides and angles must be the same: ...
www.mathsisfun.com
Primary Resources: Maths: Measures, Shape & Space: 2-D and 3-D ...
Advanced 2D Shape Work (Louise Whitby) Smart Notebook (zipped); Types of Lines ... Name and Describe 2D Shapes (Cindy Hoy) Smart Notebook (zipped) ...
www.primaryresources.co.uk
Help Sheets for Properties of 2D and 3D Shapes - Alehousewells
I have explored simple 3D objects and 2D shapes and can identify, name and describe their features using appropriate vocabulary. MTH 1-16a. ▫ I can explore  ...
www.alehousewells.aberdeenshire.sch.uk
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