3 years ago

Please help me! Thanks.

Mathematics

2 answers:

natali 33 [55]3 years ago

7 0

Answer:

$\huge \boxed{\mathrm{129\° }}$

Step-by-step explanation:

Adjacent angles in a parallelogram add up to 180 degrees.

$\mathrm{m \angle A + m \angle B=180}$

Solving for $\mathrm{m \angle B}$ .

$\mathrm{m \angle B=180-m \angle A}$

$\mathrm{m \angle B}=180-51$

$\mathrm{m \angle B=129}$

Vedmedyk [2.9K]3 years ago

5 0

Answer:

129 is yr ANSWER........

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