Home
Class 7
MATHS
If the exterior angles of a triangle are...

If the exterior angles of a triangle are `(2x+10)^0,\ (3x-5)^0` and ` (2x+40)^0,` then `x=`

A

25

B

35

C

45

D

55

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • PROFIT AND LOSS

    RD SHARMA ENGLISH|Exercise All Questions|51 Videos
  • RATIO AND PROPORTION

    RD SHARMA ENGLISH|Exercise All Questions|79 Videos

Similar Questions

Explore conceptually related problems

If the measure of the angle of a triangle are (2x)^0,\ (3x-5)^0 and (4x-13)^0dot Then the value of x is (a) 22 (b) 18 20 (d) 30

If the measure of the angles of a triangle are (2x-5)^0,(3x-1/2)\ a n d\ (30-x/2), then x= (a) (311)/9 (b) (309)/(11) (c) (310)/9 (d) (301)/9

The angles of a triangle are (x-40)^0,\ (x-20)^0\ a n d\ (1/2x-10)^0dot find the value of xdot

The angles of a triangle are (x-40)^0,\ (x-20)^0\ a n d\ (1/2x-10)^0dot find the value of xdot

The sides of a pentagon are produced in order. If the measures of exterior angles so obtaineed are x^(@), (2x)^@, (3x)^@, (4x)^@ and (5x)^@ , find all the exterior angles.

If the equations of three sides of a triangle are x+y=1, 3x + 5y = 2 and x - y = 0 then the orthocentre of the triangle lies on the line/lines

The measure of angles of a hexagon are x^0,\ (x-5)^0,\ (x-5)^0,\ (2x-5)^0,\ (2x-5)^0,\ (2x+20)^0dot Find the value of xdot

The equaiton of the lines representing the sides of a triangle are 3x - 4y =0 , x+y=0 and 2x - 3y = 7 . The line 3x + 2y = 0 always passes through the

Triangle formed by x^(2)-3y^(2)=0 and x=4 is

Find the vertices of the triangle whose sides are y+2x=3, 4y+x=5 and 5y+3x=0

RD SHARMA ENGLISH-PROPERTIES OF TRIANGLES-All Questions
  1. In Fig.67, the value of x\ a n d\ y\ a r e x=130 ,\ y=120 (b) x=120 ...

    Text Solution

    |

  2. In Fig.68, the value of x\ a n d\ y are x=120 ,\ y=150 (b) x=110 ,\ y...

    Text Solution

    |

  3. In Fig.69, if A B C D , then the value of x\ a n d\ y are x=106 ,\ y=...

    Text Solution

    |

  4. In Fig.70, if A B C D , then the value of x\ a n d\ y are x=24 ,\ y=4...

    Text Solution

    |

  5. In Fig.71, if A B C D , then the values of x ,\ y\ a n d\ z are x=56 ...

    Text Solution

    |

  6. In Fig.72, if A B || C D and A E || B D , then the value of x i...

    Text Solution

    |

  7. If the exterior angles of a triangle are (2x+10)^0,\ (3x-5)^0 and (2x...

    Text Solution

    |

  8. In Fig.73, the value of x is 20 (b) 30 40 (d) 25

    Text Solution

    |

  9. In Fig.74, if A B C D ,\ /C A B=49^0, /C B D=27^0\ a n d\ /B C D=112^...

    Text Solution

    |

  10. Which of the following is the set of measure of the sides of a triangl...

    Text Solution

    |

  11. In which of the following cases, a right triangle cannot be construc...

    Text Solution

    |

  12. Which of the following is/are not Pythagorean triplet (s)? (a) 3,4,...

    Text Solution

    |

  13. In a right triangle, one of the acute angle is four times the other. I...

    Text Solution

    |

  14. In which of the following cases can a right triangle A B C be constr...

    Text Solution

    |

  15. A B C is a right triangle right angles at Adot If A B=24\ c m\ a n d...

    Text Solution

    |

  16. A B C is an isosceles right-triangle right angled at C such that A C...

    Text Solution

    |

  17. Two poles of heights 6 m and 11 m stand vertically on a plane ground...

    Text Solution

    |

  18. A ladder is placed in such a way that its foot is 15 m away from the...

    Text Solution

    |

  19. The hypotenuse of a right triangle is 26 cm long. If one of the rema...

    Text Solution

    |

  20. A 15 m long ladder is placed against a wall in such away that the fo...

    Text Solution

    |