alleryStart learning →For parallel lines, alternate interior angles are (3x + 10)° and (5x - 30)°. Each angle is?
A60°
B70°
C80°
D50°
Answer & Solution
Correct answer: B. 70°
Alternate angles are equal, so 3x + 10 = 5x - 30 gives x = 20, and each angle is 3(20) + 10 = 70°.
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