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Prove that the angle between internal bi...

Prove that the angle between internal bisector of one base angle and the external bisector of the other is equal to one-half of the vertical angles.

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MBD-Lines and Angles-Exercise
  1. In given fig. find x.

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  2. Prove that sum of all the interior angles of a pentagon is 540^@.

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  3. Prove that the angle between internal bisector of one base angle and t...

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  4. In the given Fig , Sides AB and AC of a DeltaABC are produced to E an...

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  5. An exterior angle of a triangle is less than either of its interior op...

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  6. Sum of the three angles of a triangle is 180^@.

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  7. Sum of the four angles of a quadrilateral is the four right angles.

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  8. A triangle can have two right angles.

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  9. A triangle can have two acute angles.

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  10. A triangle can have two obtuse angles

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  11. An exterior angle of a triangle is equal to the sum of the two interio...

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  12. Sum of the three angles of a triangle is .............. .

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  13. An exterior angle of a triangle is equal to the two ............. oppo...

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  14. An exterior angle of a triangle is always .................... than ei...

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  15. A triangle cannot have more than ............ right angles

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  16. A triangle cannot have more than ............ obtuse angles.

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  17. Sum of the angles of a quadrilateral is ................ .

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  18. In fig. AB and CD intersect each other at point O. If angleAOC + ang...

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  19. In fig. POQ is a line, anglePOR = 4x and angleQOR = 2x then the valu...

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  20. In the given fig. if angleAOC + angleBOD = 75^@ then the value of an...

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