I'm a Shape

[00:07.71] I'm a triangle, I'm a triangle
[00:11.52] I have three sides, I have three sides
[00:15.74] One, two, three corners, one, two, three corners
[00:19.84] I'm a triangle, I'm a triangle
[00:23.85]
[00:31.61] I'm a square, I'm a square
[00:35.65] I have four sides, I have four sides
[00:39.88] One, two, three, four corners, one, two, three, four corners
[00:43.73] I'm a square, I'm a square
[00:48.17]
[00:55.66] I'm a rectangle, I'm a rectangle
[00:59.55] I have four sides, I have four sides
[01:03.69] Two long and two short, two long and two short
[01:07.83] I'm a rectangle, I'm a rectangle
[01:11.93]
[01:19.76] I'm a circle, I'm a circle
[01:23.77] I'm all round, I'm all round
[01:27.85] No sides or corners, no sides or corners
[01:31.86] I'm a circle, I'm a circle
[01:36.50]