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Find the angle between the diagonals of ...

Find the angle between the diagonals of parallelogram ABCD whose vertices are A (0, 2), B (2, - 1), C (4, 0) and D (2, 3).

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MODERN PUBLICATION-STRAIGHT LINES -EXERCISE
  1. The angle between two lins is pi/4 and the slope of one of them is 1...

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  2. The slope of a line is double of the slope of another line. If tangent...

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  3. Find the angle between the diagonals of parallelogram ABCD whose verti...

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  4. Find the equation of the st. line joining the points (3, -1) and (2, 3...

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  5. Find the equations of the st. lines which pass through (4, 5) and make...

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  6. Find the equations of the lines, which pass through the point (4, 5) a...

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  7. Find the equations of the lines through the point (3, 2) which make ac...

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  8. Find the equation of the st. line that has y-intercept 4 and is parall...

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  9. Find the equation of a line that has x-intercept 3 and perpendicular t...

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  10. Find the equation of the lines through (- 2, -1) and are : parallel to...

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  11. Find the equation of the lines through (- 2, -1) and are : perpendicul...

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  12. Find the equation of a line through the point (-2,3) and parallel to t...

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  13. Find the equation of the line parallel to the line 3x- 4y + 2 = 0 and ...

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  14. Find the equation of the line perpendicular to the line x - 2y + 3 = 0...

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  15. Find the equation of the line that is parallel to 2x +5y = 7 and passe...

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  16. Find the equation of the perpendicular bisector of the st. line segmen...

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  17. Prove that the equation of the st. line parallel to Ax + By + C = 0 an...

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  18. Prove that the equation of the st. line perpendicular to Ax + By + C =...

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  19. Find the equation of the st. line going through the point (1,-2) and p...

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  20. Find the equation of a line passing through (4,5) and perpendicular to...

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