Question

after 90 degrees rotation about the centre of rotation a figure looks exactly the same as its original position. at which of the following angles will this not happen again for the figure a) 120 degrees b) 180 degrees c) 270 degrees ​

Answer 1

Answer:

When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). In other words, switch x and y and make y negative.

Step-by-step explanation:

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