##### Math homework help needed

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Oct 27th, 2015

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$\triangle ABC\cong \triangle DEC$

If two triangles are congruent then their corresponding sides and angles are equal.

$\therefore m\angle A=m\angle D\hspace{5}(CPCT)$
But it is given that $m\angle A=40^{\circ}$
Hence, $m\angle D=40^{\circ}$

ANSWER: $m\angle D=40^{\circ}$
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Oct 27th, 2015

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Oct 27th, 2015
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Oct 27th, 2015
Oct 21st, 2017
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