Those opposite square panels look good Turtle but the kite may be a bit un flight worthy with the 2 pairs of parallel square sides being at angles to each other.
Acknowledged. I will report on results of experiments once I get the thing together. I have 4 square frames done, and 2 to go. The triangles will appear of themselves as I glue the square frames to one-another. I will proceed in full knowledge that this thing may fly as well as a stick alone.
Turtle, I confess to not having read all three pages but wondering if you got your answer. Oldest kite? Perhaps Icarus? He went up with his. Came back down with it, too, poor fellow.
Excuse me. 34 pages? Excuse? With temperature fast approaching 103, I refuse to accept responsibility for anything I do today. Whew!
I haven't seen any reference to kites in ancient Greece, and Icarus is said to have worn wings as did his father Daedalus that made them. Wings, not being tethered to the ground, can't be counted as kites. Some say Daedalus invented the sail and that he and Icarus escaped Crete by boat and Icarus fell in and drowned. I would count a sail closer to a kite than wings.
The earliest written record of kites that I have run across come from 5th century BCE in China.
Take your time reading and don't let that heat get the better of you!