I\'m working on a homework assignment, consisting of 2 parts. The first is to write a Prolog program that checks if a certain pair X, Y belongs to a http://en.wikipedia.org/wiki/Triangular_number. For
北京健康宝怎么换照片？就算是健康宝的照片也要美美哒，觉得自己的健康宝照片不好看的该怎么更换呢？下面小编就带来了健康宝照片更换的方法，赶紧来瞧瞧吧。
I need to draw a triangle in an image I have loaded. The triangle should look like this: 1 0 0 0 0 0 1 1 0 0 0 0
加载中,请稍侯......