Impossible Triangle, 20242 in. x 4 in. x 8 ft. lumber, screws, wood glue, spray paint3 ft. x 3 ft. x 6 ft. Slide 1 Slide 1 (current slide) Slide 2 Slide 2 (current slide) Slide 3 Slide 3 (current slide) Slide 4 Slide 4 (current slide) Slide 5 Slide 5 (current slide)