Quotable maths: Armstrong Aug 30, 2012 RIP, Neil Armstrong (1930-2012). A selection of other posts Dec 24, 2018 A Christmas Decagon Feb 1, 2017 Ask Uncle Colin: A Triangle That's Not As Nice As It Looks Feb 22, 2013 Silly Questions Amnesty Feb 20, 2013 Another Facebook Question (Which I Only Sort Of Answer) subscribe via RSS
