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If the diagonals of a parallelogram are ...

If the diagonals of a parallelogram are perpendicular, then it is a rhombus.

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MODERN PUBLICATION-STRAIGHT LINES -EXERCISE
  1. If two medians of a triangle are equal, prove that the triangle is iso...

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  2. Prove that the median from the vertex of an isosceles triangle is the ...

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  3. If the diagonals of a parallelogram are perpendicular, then it is a rh...

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  4. Which of the following statements are True or False : If the diagonals...

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  5. Classify the following pairs of lines as coincident, parallel, perpend...

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  6. Classify the following pairs of lines as coincident, parallel, perpend...

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  7. Classify the following pairs of lines as coincident, parallel, perpend...

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  8. Classify the following pairs of lines as coincident, parallel, perpend...

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  9. Classify the following pairs of lines as coincident, parallel, perpend...

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  10. Find the distance between the line and the point of the following : ...

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  11. Find the distance between the line and the point of the following : ...

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  12. Find the distance between the line and the point of the following : ...

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  13. Find the distance between the line and the point of the following : ...

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  14. Find the distance between the line and the point of the following : ...

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  15. Find the distance between the line and the point of the following : ...

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  16. Which of the st. lines 2x - y + 3 = 0 and x- 4y-7=0 is farther from th...

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  17. Find the point on the x-axis, whose distances from the line (x)/(3)+(y...

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  18. In the triangle with vertices A (2, 3), B (4, -1) and C (-1,2), find t...

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  19. The vertices of a triangle are A (-2, 1), B (6, -2) and C (4, 3). Find...

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  20. Find perpendicular distance of the line joining the points (cos theta,...

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