**Linear pair and vertically opposite angles - Khan Academy**
https://www.khanacademy.org/math/in-in-grade-9-ncert/xfd53e0255cd302f8:lines-and-angles/xfd53e0255cd302f8:pairs-of-angles/e/linear-pair--vertically-opposite-9th

WebLinear pair and vertically opposite angles. Find the value of a and b . Stuck? Use a hint. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

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