Question
Find the supplementary/complementary angle
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Answer
$\angle ABD +\angle DBC =180^{\circ}$
$\angle ABD +25^{\circ}=180^{\circ}$
$\angle ABD =180^{\circ}-25^{\circ}$
$\angle ABD =155^{\circ}$
$\angle ABD +25^{\circ}=180^{\circ}$
$\angle ABD =180^{\circ}-25^{\circ}$
$\angle ABD =155^{\circ}$
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