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Chapter 6 Class 9 Lines and Angles (Term 1)
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Ex 6.2, 1 - In the given figure, find the values of x & y - Parallel lines and traversal - Problems

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Ex 6.2, 1 In the given figure, find the values of x and y and then show that AB || CD. Now, 50 + x = 180 x = 180 50 x = 130 Also, y = 130 x = y So, alternate angles are equal From theorem 6.3: If a transversal intersects two lines such that pair of alternate interior angles are equal, then lines are parallel. AB CD

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