Regular polygons with these numbers of sides can be constructed with a compass and straightedge. “Seventeen (17) is a positive integer one more than 16 and one less than 18. 17 is the seventh... 17 “Three (3) is a positive integer one more than 2 and one less than 4. Three is the 2nd prime... 3 “Four (4) is a positive integer one more than 3 and one less than 5. Four is the first even... 4 “Five (5) is a positive integer one more than 4 and one less than 6. 5 is the third prime number... 5 “Six (6) is a positive integer one more than 5 and one less than 7. 6 is the second composite... 6 “Eight (8) is a positive integer one more than 7 and one less than 9. 8 is the second cube... 8 “Ten (10) is a positive integer one more than 9 and one less than 11. 10 is the base of our... 10 “Twelve (12) is a positive integer one more than 10 and one less than 12. 12 is a highly... 12 Pages in category "Constructible numbers" The following 11 pages are in this category, out of 11 total. 1 10 12 15 16 1 cont. 172 203 34 4 5 56 68 8 Categories: Numbers Add category Cancel Save