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Two lines are perpendicular to the same line are ......... to each other.

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MODERN PUBLICATION-LINES AND ANGLES-EXERCISE
  1. Which pari of lines in the fig. are parallel? Given reasons

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  2. In the fig. ABCD is a quadrilateral in which AB||DC and AD||BC prove t...

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  3. Two lines are perpendicular to the same line are ......... to each oth...

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  4. Prove that if one angle of a triangle is equal to the sum of the other...

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  5. Two lines AB and CD intersect at O. if angleAOC+angleCOB+angleBOD=270^...

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  6. In the fig. p is a transversal to lines m and angle2=120^@ and angle5=...

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  7. If l,m and n are three straight lines such that l||m and l||n then pro...

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  8. In the fig. arms BA and BC of angleABC respectively parallel to arms B...

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  9. In triangleABC, if angleB=76^@, and angleC=48^@ find angleA

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  10. In triangleABC, if angleA=55^@, angleB=40^@ find angleC

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  11. In triangleABC, if angleA+angleB=108^@ and angleB+angleC=109^@, find a...

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  12. Two angles of a triangle are equal and the third angle is greater than...

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  13. The sum of two angles of a triangle is 116^@ and difference is 24^@. F...

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  14. In a right angled triangle one of the acute angle measures 53^@, find ...

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  15. If each angle of a triangle is less than the sum and other two, show t...

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  16. The exterior angles,bounded obtained on producing of a triangle of bot...

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  17. In the fig side BC of triangleABC is produced to angleACD=128^@ and an...

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  18. Calculate the value of x in each of the following figures

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  19. Calculate the value of x in each of the following figures

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  20. Calculate the value of x in each of the following figures

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