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Two lines AB and CD intersect at O. if `angleAOC+angleCOB+angleBOD=270^@`. Find the measures of `angleAOC, angleCOB,angleBOD` and `angleDOA`.

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MODERN PUBLICATION-LINES AND ANGLES-EXERCISE
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  2. Prove that if one angle of a triangle is equal to the sum of the other...

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

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

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

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

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

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

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

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

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

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

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

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

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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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