Posted by CAITLIN D. on Sunday, May 17, 2009 at 8:52am.
You have posted several questions which are all based on the same principles
already pointed out by 'drwls'
Why don't you make a diagram of a regular polygon, sketch the 5 isosceles triangles created by joining the vertices to the centre.
Wouldn't the central angle of each of those be 360/5º ? or 72º ?
now work your way around the whole figure by finding all the angles, including the exterior angles formed by extending the sides
I noticed 'drwls' already pointed out that the exterior angle is 360/(number of sides), in this case 360/5
Isn't that the same as the central angle?
Now repeat the argument for an n-sided regular polygon.
You've received good ideas from two math teachers. Your other posts have therefore been removed.
If you have further questions, be sure to post what YOU HAVE DONE as well.
Related Questions
MATH - The exterior angle of a regular polygon is the angle formed by an ...
Maths - In a regular polygon,each interior angle doubles its corresponding ...
math--fast help please - Find the interior and exterior angle measurements of a ...
geometry - If the ratio of the interior angle to the exterior angle is 5:1 for a...
Geometry - 1. How many sides does a regular polygon have if one exterior angle ...
please help!!!!! someone - Each exterior angle of a regular polygon is 15 ...
geometry - 1. An exterior angle of a regular polygon measures 30 degrees. What ...
maths - each interior angle of a regular polygon is 18 degree more than eight ...
geometry - What is the relationship between the measure of a central angle of a ...
geometry - What is the relationship between the measure of a central angle of a ...
For Further Reading
