Home
Class 9
MATHS
Side B C of a triangle A B C has been pr...

Side `B C` of a triangle `A B C` has been produced to a point `D` such that `∠ACD = 120^0dot` If `/_B=1/2/_A ,` then `/_A` is equal to `80^0` (b) `75^0` (c) `60^0` (d) `90^0`

Promotional Banner

Topper's Solved these Questions

  • TABULAR REPRESENTATION OF STATISTICAL DATA

    RD SHARMA ENGLISH|Exercise All Questions|70 Videos

Similar Questions

Explore conceptually related problems

If A ,\ B ,\ C are three points on a circle with centre O such that /_A O B=90^0 and /_B O C=120^0, then /_A B C= (a) 60^0 (b) 75^0 (c) 90^0 (d) 135^0

In Figure, If /_A B C=45^0, then /_A O C= (a) 45^0 (b) 60^0 (c) 75^0 (d) 90^0

In a rhombus A B C D , if /_A C B=40^0, then /_A D B= (a) 70^0 (b) 45^0 (c) 50^0 (d) 60^0

The side B C of A B C is produced to a point Ddot The bisector of /_A meets side B C in Ldot If /_A B C=30^0a n d\ /_A C D=115^0, then /_A L C= 85^0 (b) 72 1/2^0 (c) 145^0 (d) none of these

In a A B C , if A B=A C\ a n d\ B C is produced to D such that /_A C D=100^0, then /_A= (a) 20^0 (b) 40^0 (c) 60^0 (d) 80^0

In a A B C ,\ /_A=50^0a n d\ B C is produced to a point Ddot If the bisectors of /_A B C\ a n d\ /_A C D meet at E , then /_E= (a) 25^0 (b) 50^0 (c) 100^0 (d) 75^0

In a triangle A B C , if B=30^0a n d\ c=sqrt(3)\ b , then A can be equal to (a) 45^0 (b) 60^0 (c) 90^0 (d) 120^0

A B C D is a parallelogram in which diagonal A C\ bisects /_B A Ddot If /_B A C=35^0 , then /_A B C= (a) 70^0 (b) 110^0 (c) 90^0 (d) 120^0

If /_\A B C and /_\D E F are similar triangles such that /_A=47^0 and /_E=83^0 , then /_C= (a) 50^0 (b) 60^0 (c) 70^0 (d) 80^0

In a A B C , if /_A+/_B=150^0 and /_B+/_C=75^0, then /_B= (a) 35^0 (b) 45^0 (c) 55^0 (d) 25^0

RD SHARMA ENGLISH-TRIANGLE AND ITS ANGLES-All Questions
  1. An exterior angle of a triangle is equal to 100^0 and two interior ...

    Text Solution

    |

  2. If one angle of a triangle is equal to the sum of the other two angl...

    Text Solution

    |

  3. Side B C of a triangle A B C has been produced to a point D such tha...

    Text Solution

    |

  4. In A B C ,\ /B=/C and ray A X bisects the exterior angle /D A CdotI...

    Text Solution

    |

  5. In a triangle, an exterior angle at a vertex is 95^0 and its one of ...

    Text Solution

    |

  6. If the sides of a triangle are produced in order, then the sum of th...

    Text Solution

    |

  7. In △ A B C , if /A=100^0,\ A D bisects /A\ a n d\ /A D\ |B C . Then, ...

    Text Solution

    |

  8. An exterior angle of a triangle is 108^0 and its interior opposite...

    Text Solution

    |

  9. In a A B C , if /A=60^0,\ /B=80^0 and the bisectors of /B\ a n d\ /C ...

    Text Solution

    |

  10. If the bisectors of the acute angles of a right triangle meet at O ,...

    Text Solution

    |

  11. Line segments A B\ a n d\ C D intersect at O such that A C = D Bdot If...

    Text Solution

    |

  12. The bisects of exterior angles at B and C of triangle A B C meet at ...

    Text Solution

    |

  13. In a A B C ,\ /A=50^0a n d\ B C is produced to a point Ddot If the bi...

    Text Solution

    |

  14. The side B C of A B C is produced to a point Ddot The bisector of /A ...

    Text Solution

    |

  15. In Figure, if E C || A B ,\ /E C D=70^0A N D\ /B D O=20^0 , then /O B...

    Text Solution

    |

  16. In Figure, x+y= 270 (b) 230 (c) 210 (d) 190^0

    Text Solution

    |

  17. If the measures of angles of a triangle are in the ratio of 3:4:5, w...

    Text Solution

    |

  18. In Figure, if A B|B C , then x= 18 (b) 22 (c) 25 (d) 32

    Text Solution

    |

  19. In Figure, what is z in terms of \ a n d\ y ? x+y+180 (b) x+y-180 18...

    Text Solution

    |

  20. In Figure, for which value of x is l1 l2 ? 37 (b) 43 (c) 45 (d) ...

    Text Solution

    |