j387500
j387500 j387500
  • 26-05-2016
  • Mathematics
contestada

Polygon ABCDE rotates 45° clockwise about point F to produce polygon FGHIJ as shown. What is mBCD?

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Hussain514 Hussain514
  • 07-06-2016
The order of letters is important. 
Since polygon ABCDE is rotated to produce polygon FGHIJ, then image of A is F, image of B is G, and so on.
And since rotation preserves the shape, then 
m∠BCD = m∠GHI = 127°
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