 Alright, here's how you can use a piece of paper to create a 30-60 triangle. First thing you want to do is fold it in half long ways, just create a little sort of origami fold here at the top. You don't need to fold the whole way down. The next thing you want to do is on the right side of this piece of paper, fold that in half as well, so you create a quarter. I'm just gonna fold that sort of back down to there because that's all we'll need. Alright, so now you'll see that we've got a fold in the half and a fold here to create the quarter. We want to take the upper top corner and we want to fold at the halfway point here. So there we go, there's the halfway point and I want to position the edge of this piece of paper so it's directly on the line here and that is the fold that I want to create. So I'm just going to push that down there. Cool. You can see here how we've created an equilateral triangle. So this angle is the same as this angle and it's the same as this angle. They're all 60 degrees. If we chop this triangle in half then we'll just focus on this right-angled triangle here and I'll signify that by drawing a right angle there. Now this is 90 degrees. This still remains 60 degrees but we only want half of this angle up here. So that's going to remain at 30 degrees and we can use this segment to create our segment for our clock and there you have it. There's our 30, 60 and 90 degree triangle.