Originally Posted by
HomekeepingGran
...To be sure I am getting the correct square from your description, as I look at the bottom row of blocks, if I count from the right over to the third block I see a largish purple square and below it is a square comprised of three triangles, one in turquoise/teal and the other two on top of the teal one in white. On either side of the block I am seeing are a pair of 4-patches. Is this the "squared triangle" you mention?
Yes, that's the one. Here's a YouTube on how to use the rulers. There are several other youtube videos on these tools, so you can take a look at those if you need more info, and, since you asked so nicely, the quiz will be cancelled.
http://www.youtube.com/watch?v=8CT7g1NXrL4