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I'm not sure if a icosogon is a 20 sided shape, but here goes. (Also assuming that its regular)
An 'icosogon' has 20 angles and 20 sides therefore 20 lines of symmetry though its sides and angles each.
20+20=40
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No it does not!
Each line of symmetry is either from a mid-point of one side to the mid point of the opposite side, or from one vertex to the opposite vertex. Thus, each line accounts for two liners or two angles and therefore there are only 10 + 10 = 20 lines of symmetry.
What else can I help you with?
How many lines of symmetry does a nephroid have?
A nephroid has 2 lines of symmetry.
How many lines of symmetry does a four point star have?
it has five lines of symmetry
How many lines of symmetry on a decagon?
10 lines of symmetry
How many lines of symmetry does a trapezuim have?
4 Lines of symmetry
How many lines of symmetry does H have?
2 lines OF SYMMETRY
How many lines of symmetry does a tetrahedon have?
2 lines of symmetry
How many lines of symmetry do oblongs have?
It has 2 lines of symmetry.
How many lines of symmetry has the number 4?
no lines of symmetry
How many lines of symmetry does phi have?
2 lines of symmetry
How many lines of symmetry in pentgon drawing of lines of symmetry?
5 lines
What are the eight lines of symmetry?
There is no such thing as 8 lines of symmetry. A circle, for example, has infinitely many lines of symmetry.
How many lines of symmetry?
There are infinitely many lines of symmetry. Every line can be a line of symmetry for a suitable shape.
