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Renathy · Answer 1 · 2022-05-24T03:06:43+0000

Answer:

180°

Explanation:

ABCD is a parallelogram.

Measures of the opposite angles of a parallelogram are equal. Here
$\angle A, \:\: \angle C \: \: and\:\: \angle B, \:\: \angle D$ are opposite angles.

$\therefore m\angle A = m\angle C = 110\degree$

$\& \:m\angle B = m\angle D = 70\degree$

$m\angle A + m\angle B =110\degree + 70\degree$

$m\angle A + m\angle B =180\degree$

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