Reply 1
21
Original post
by SichwünschenThe three points of the triangle are (obviously) not invariant, so what point when rotated by 180 and then translated by 5,-2 is invariant? Its a 1 marker/write down, so a little bit of thinking is all thats necessary. The previous question part (single transformation) should help if you cant see it.
Note your Q is wrong (and subsequently so is R). So think about each point rotated.
Reply 2
12
Original post
by mqb2766The three points of the triangle are (obviously) not invariant, so what point when rotated by 180 and then translated by 5,-2 is invariant? Its a 1 marker/write down, so a little bit of thinking is all thats necessary. The previous question part (single transformation) should help if you cant see it.
Note your Q is wrong (and subsequently so is R). So think about each point rotated.
Note your Q is wrong (and subsequently so is R). So think about each point rotated.
Reply 3
21
Original post
by SichwünschenHow do I get invariant points if none of them are invariant though?
What point returns to the same point after a 180 rotation then a translation by (5,-2)? You could write down the algebra if necessary (a couple of simple lines), but for 1 mark (the question says write down), they expect you to be able to reason about it.
(edited 10 months ago)
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