Amazing No. 1089 (the amazing number 1089). Click the Flag to get Scratch to draw the right angled triangle. Note: Strictly speaking it is a doubled sized triangle being sides of length 66 (2 x 33), 112 (2 x 56) & 130 (2 x 65) pixels. Hit Space (or click the stage) to find out more about the amazing number 1089.
I added music using note blocks (mostly based on scale degrees from middle C if u know what I'm talking about). The slider on the top right corner of the stage controls music volume. For completeness sake I filled a 'cavity' in the bottom right with something that was already there