an origami regular square pyramid

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25:34

25:34

9:57

13:35

6:12

8:08

8:21

9:57

2:14

7:43

3:52

15:07

7:34

1:19:47

8:20

16:13

7:43

19:43

6:17

4:21

11:46

12:50

6:12

1:11

9:16

40:26

5:56

9:07

2:55

45:50

12:09

35:08

5:41

6:32

21:31

9:43

4:09

19:57

24:06