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Lines are straight and have negligible depth or width. If a ray stands on a line, then the sum of two adjacent angles so formed is 180 degree and vice versa. Lines and angles class 9 extra questions maths chapter 6. The solutions are provided by the experienced teachers at byjus. Our experts have designed exemplar problems in accordance with cbse syllabus 20192020 for 9th standard, which covers the following topics of chapter lines and angles given below basic terms like line segment, collinear points, noncollinear points, right angle.
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