







A regular octagon is inscribed in a circle 
20051213 

Carlin pose la question : A regular octagon is inscribed in a circle of radius 15.8 cm. What is the perimeter of the octagon? Penny Nom lui répond. 





The length of the side of an octagon 
20050922 

Billy pose la question : How can you find the length of the side of an octagon when all that you know are the long sides of one of the eight perfect isc. triangles inside the octagon that share the same center point? Penny Nom lui répond. 





A stained glass window 
20040329 

Kay pose la question : I'm doing a stain glass project and it's on a 4 foot across octagonal window...and I'm trying to set up the pattern and I don't know how long the sides are! Penny Nom lui répond. 





The side length of a regular octagon 
20030809 

Rich pose la question : If I know the distance between the parallel lines of an octagon and want to find the length of the sides, can I just divide that distance by 2.414 to reveal the length of the sides? I work construction and just curious if I am figuring it right. Penny Nom lui répond. 





Diagonals in an octagon 
20030804 

Amanda pose la question : How many diagonals are in an octagon??? What would be a drawing of those diagonals??? Penny Nom lui répond. 

