What is the measure of angle d

Mathematics

1 answer:

choli [55]3 years ago

6 0

$\angle D =\angle B\\\\
\angle B=\angle A+30\\
\angle A+ \angle B=180\\\\
\angle A+\angle A+30=180\\
2\angle A=150\\
\angle A=75\\\\
\angle B=75+30=105\\
\boxed{\angle D=105}
$

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