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You can count them. Also, the name determines the number of sides:
triangle= 3 sides
quadrilateral= 4
pentagon= 5
hexagon= 6
heptagon= 7
octagon= 8
nonagon= 9
decagon= 10
*hendecagon= 11
dodecagon= 12
After that, they are named as n-gons, with n being the number of sides. Example- a 20-gon has 20 sides.
* an 11 sided polygon is usually called a hendecagon, but it has other names and may just be called an 11-gon.
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What are the sides of the interior angles of a regular 21gon?
It is not possible to determine the length of the sides of a regular polygon simply from the number of sides.
Is a polygon with 5 sides regular or irregular?
Either. A 5-sided polygon can be either regular or irregular. It is only regular if all sides and all angles are equal. Otherwise it is irregular. The number of sides is insufficient to determine whether a polygon is regular or irregular.
How do you work out the number of sides in a regular polygon that has an exterior angle?
With a regular polygon: 360/exterior angle = number of sides
What is the formula to find the sides of a regular polygon?
360/exterior angle = number of sides of a regular polygon
Name each polygon tell if it appears to be a regular polygon?
It is not possible to name each polygon since there are infinitely many of them. There is no relationship between whether a polygon is regular and the number of sides or angles that it has. So, there is no way to determine, from its name, if a polygon is regular.
What is the number of sides of a regular polygon if its sum of interior polygon is 5760?
It will have 34 sides
How many sides does a regular polygon have?
The number of sides a polygon has depends on the polygon. A triangle has three sides (tri=3). A rectangle (quadrilateral) has four sides (quad=4). A regular polygon can have any greater number of sides, without limit.
What is the rule for the number lines of symmetry of any regular polygon?
Number of lines of symmetry = Number of sides of the regular polygon
How many sides does the largest polygon have?
There is no mathematical limit to the number of sides that a polygon can have. As the number of sides increases the polygon will become more and more like a closed curve - a regular polygon will become like a circle. The size of the polygon and accuracy of measurement will determine when it is no longer possible to distinguish between the polygon and the curve. Nevertheless, the two shapes will be mathematically different objects.
how many sides does a regular polygon have if the exterior angle is 15?
by the number of sides, 'n' of that particular polygon. by the exterior angle. Therefore, the number of sides of the polygon is 24 sides.
How do you work out the exterior and interior angles of a regular polygon with W sides?
Exterior angle regular polygon = 360° ÷ number of sides = 360° ÷ W Interior angle regular polygon = 180° - exterior angle regular polygon = 180° - (360° ÷ number of sides ) = 180° - (360° ÷ W)
If the midpoint of successive sides of a regular polygon are joined a smaller regular polygon is formed Find a polygon of such number of sides so that the area is half that of the larger?
The polygon is a Quadrilateral.
