I found this question referenced from a released SAT test from 2010 (see below).
11-21-2010 at 4:44 pm edited November 2010 in SAT and ACT Tests & Test Preparation
ok so there is this one problem that I really don't get. (i searched everywhere, even on khan and cc but no luck)
its section 2 problem number 17.
In the figure above, a shaded polygon which has equal sides and equal angles is partially covered with a sheet of blank of blank paper. If x+y=80, how many sides does the polygon have.
There needs to be a figure to go with the problem. Please provide the figure with your question!