meerkat18 meerkat18

03-08-2016
Mathematics

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

Polygon ABCDE rotates 45 clockwise about point F to produce polygon FGHIJ as shown What is mBCD class=

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taskmasters taskmasters

11-08-2016

Polygon FGHIJ is the result of the rotation of ABCDE.

A = F ⇒ 117°
B = G ⇒ 90°
C = H ⇒ 127°
D = I ⇒ 90°
E = J ⇒ 117°

The measure of angle BCD remains the same because the rotation involves the whole polygon. Thus, it is still 127°

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