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myrzilka [38]
3 years ago
6

PLS HELP (brainliest)

Mathematics
2 answers:
blsea [12.9K]3 years ago
8 0

Answer:

180°

Step-by-step explanation: We are given the co-ordinates of ΔDEF as D(-1,6), E(1,3) and F(6,3).

Now, after rotation the co-ordinates of the new triangle D'E'F' are D'(1,-6), E'(-1,-3) and F'(-6,-3).

As we see that, the co-ordinates of triangle DEF are multiplied by negative sign to obtain the co-ordinates of triangle D'E'F'.

This means that, the triangle DEF is rotated 180° to form triangle D'E'F' because rotating 180 changes (x,y) to (-x,-y).

So, the rotation applied is 180° to ΔDEF.

vichka [17]3 years ago
3 0
Your answer is 180 degrees
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