For any N-sided polygon: Sum of the interior angles can be found by (N-2)*180°. Note that a 3 sided polygon (triangle) is the least number of sides possible. So for 18 sides: (18-2)*180° = 2880°
(18-2)*180 = 2880 degrees
(18-2)*180 = 2880 degrees
octadecagon is the name of a 2 d 18 sided polygon. The octa part is for 8 and the deca is for 10 since 18=10+8
If the 20-sided polygon is a regular polygon, then:The sum of all 20 angles = (20 - 2)180⁰ = 18(180⁰) = 3240⁰Each angle measure = 3240⁰/20 = 162⁰
18. If a polygon has n sides, then it has n-2 triangles.There are 18 triangles in a 20 sided polygon.
For any N-sided polygon: Sum of the interior angles can be found by (N-2)*180°. Note that a 3 sided polygon (triangle) is the least number of sides possible. So for 18 sides: (18-2)*180° = 2880°
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(18-2)*180 = 2880 degrees
(18-2)*180 = 2880 degrees
The sum of the interior angles are (18-2)*180 = 2880 degrees
Nope! No kids. Just lots of gorgeousness.
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Depending on their shapes and relative sizes, anything from a rectangle to an 18-sided polygon (if they are allowed to overlap).Depending on their shapes and relative sizes, anything from a rectangle to an 18-sided polygon (if they are allowed to overlap).Depending on their shapes and relative sizes, anything from a rectangle to an 18-sided polygon (if they are allowed to overlap).Depending on their shapes and relative sizes, anything from a rectangle to an 18-sided polygon (if they are allowed to overlap).
I think that it can have 0, 1, 2, 3, 6, 9 or 18 lines of symmetry.
The sum of the interior angles of a polygon with n sides is (n-2)*180 degrees So (n-2)*180 = 3240 Hence n-2 = 18 so that n = 20.
octadecagon is the name of a 2 d 18 sided polygon. The octa part is for 8 and the deca is for 10 since 18=10+8