Question

In the given figure, AB ∥CD and l is a transversal. If ∠2 = 2 × ∠ 1, then find the measure of ∠7 ?​

Answer 1

Answer:

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Answer 2

Answer:

$\angle2 + \angle1 = 180 \degree \\ \angle2 = 2 \angle1 \\ 2 \angle1 + \angle1 = 180 \degree \\ 3 \angle1 = 180 \degree \\ \angle1 = \frac{180}{3 } \\ \angle1 = 60 \degree \\ \angle1 = \angle3 = \angle7 = 60 \degree$

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