Here is the third constellation of this group - Aquila the Eagle. Though I'm not sure how you're supposed to get an eagle out of this shape. Either way, along with Cygnus and Lyra (which are located north of above this one), Aquila forms a very familiar group in the late summer, early autumn night sky.
The bright star in Aquila, Altair, can be used to make a large triangle in the sky by drawing a line from it to Deneb (in Cygnus) to Vega (in Lyra) and then back to Altair. This is the asterism known as the Summer Triangle.