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Prove that two lines perpendicular to...

Prove that two lines perpendicular to the same line are parallel to each other.

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Which of the following statements are true (T) and which are false (F)? Give reasons. (i)If two lines are intersected by a transversal, then corresponding angles are equal. (ii)If two parallel lines are intersected by a transversal, then alternate interior angles are equal. (iii)Two lines perpendicular to the same line are perpendicular to each other. (iv)Two lines parallel to the same line are parallel to each other. (v)If two parallel lines are intersected by a transversal, then the interior angle on the same side of the transversal are equal.

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RD SHARMA ENGLISH-LINES AND ANGLES -All Questions
  1. In Figure , State which lines are parallel and why.

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  2. In Figure, if l\ || \m\ ,\ n\ || \p\ a n d\ /1=85^@ , find /2

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  3. Prove that two lines perpendicular to the same line are parallel to...

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  4. Prove that if the two arms of an angle are parallel to the two arms ...

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  5. In Figure, A B || C D and P is any point shown in the figure. Prove ...

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  6. Two unequal angles of a parallelogram are in the ratio 2: 3. Find a...

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  7. If each of the two lines is perpendicular to the same line, what ki...

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  8. In Figure, /1=60^0a n d\ /2=(2/3)^(r d) of a right angle. Prove that...

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  9. In Fig., if l || m|| n and /1=60^0, find /2.

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  10. Prove that two lines perpendicular to the same line are parallel to...

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  11. The opposite sides of a quadrilateral are parallel. If one angle of...

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  12. Two lines A B\ a n d\ C D intersect at Odot If /A O C+/C O B+/B O D=27...

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  13. In Figure, p is a transversal to lines m and n and , /2=120^0a n d\ ...

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  14. In Figure, transversal l intersects two lines m\ a n d\ n , /4=110^0\ ...

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  15. Which pair of lines in Fig. are parallel? Given reasons.

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  16. If l ,\ m,\n are three lines such that l || m\ a n d\ n|l , prove th...

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  17. If Figure, arms B A\ a n d\ B C\ of /A B C are respectively paralle...

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  18. Which of the following statements are true (T) and which are false (...

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  19. Fill in the blanks in each of the following to make the statement tr...

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  20. Define complementary angles.

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