A shape with ten sides is called a decagon
A shape with three sides is called a triangle.
It is an IRREGULAR shape.
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The sum of all the sides of a given shape is the perimeter of that shape.
A shape with four sides is called a quadrilateral.
A shape with 12 sides is called a dodecagon.
A 1000000000000-gon. Keep it simple! Not only is the use of long Greek prefices pretentious, you will only annoy the reader who will probably have to consult a dictionary.
A shape w/ 11 sides is called a hendecagon.
The answer to the question 'What is a shape with six sides called' would be a hexagon.
A shape with ten sides is called a decagon
A shape's sides are called faces.
A shape with three sides is called a triangle.
A shape with nine sides is called a nonagon.
If the shape is 2-dimensional, then it is called a polygon. A polygon of 5 sides is a PENTAGON.
A shape with three sides is called a triangle. A shape with ten sides is called a decagon.
The shape is called a decagon. If all the sides and angles are the same, it is called a regular decagon.