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  • Jimmy Campbell commented,

    Apologies - bad post. I just found the video that clarifies that the convention is indeed that a positive rotation is in the anticlockwise direction! https://www.khanacademy.org/math/cc-eighth-grad...

  • Jimmy Campbell commented,

    You don't really need a protractor. We know that all of the sides are of the same length (10cm) so we can just use a ruler to measure the diagonals and see if it's really a square. In a square, the...

  • Jimmy Campbell created a post,

    what is the convention for positive rotation

    What is the convention for a rotation of 90 degrees where neither clockwise nor anticlockwise are explicitly stated? Is a rotation of 90 degrees assumed to be 90 degrees anticlockwise as the explan...

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