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CHAPTER AT A GLANCE
Parallel and Intersecting Lines
•Unit: Geometry
•Board weightage: Intersecting lines, linear pairs, vertically opposite angles, parallel lines, transversal, corresponding, alternate and interior angles give regular 1-mark, 2-mark and 3-mark questions (please check the latest sample paper)
•Key ideas from the textbook: lines that intersect, linear pair, vertically opposite angles, perpendicular lines, parallel lines, transversal, corresponding angles, alternate angles, interior angles on the same side, drawing parallel lines with a set square and by paper folding
•Most scoring part: finding unknown angles in a figure with a transversal and giving the reason for every step
•Time to revise: about 50 minutes
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