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Quadrilateral ABCD is a parallelogram
If angle A = x + 40 and angle C = 2x + 10, what is angle A​

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Answer:

In a parallelogram, opposite angles are congruent; therefore,

∠A = ∠C

[tex]x+40=2x+10[/tex]

[tex]2x-x=40-10[/tex]

[tex]x=30[/tex]

∠A = x + 40 = 30 + 40 = 70°

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