Home
Class 9
MATHS
If the bisectors of the base angles of a...

If the bisectors of the base angles of a triangle enclose an angle of `135^0,` prove that the triangle is a right triangle.

Text Solution

AI Generated Solution

To prove that the triangle is a right triangle given that the bisectors of the base angles enclose an angle of \(135^\circ\), we can follow these steps: ### Step 1: Define the Triangle and Angles Let triangle \(ABC\) have \(AB\) as the base. Let \(AD\) be the bisector of angle \(A\) and \(BE\) be the bisector of angle \(B\). According to the problem, the angle enclosed by these bisectors, \(\angle ADB\), is \(135^\circ\). ### Step 2: Use the Angle Bisector Theorem Since \(AD\) and \(BE\) are angle bisectors, we have: \[ ...
Promotional Banner

Topper's Solved these Questions

  • TABULAR REPRESENTATION OF STATISTICAL DATA

    RD SHARMA|Exercise All Questions|62 Videos

Similar Questions

Explore conceptually related problems

If the bisector of the vertical angle of a triangle bisects the base, prove that the triangle is isosceles.

The bisectors of base angles of a triangle cannot enclose a right angle in any case.

The bisectors of base angles of a triangle cannot enclose a right angle in any case.

If the bisector of an angle of a triangle bisects the opposite side,prove that the triangle is isosceles.

Show that if sum of the two angles of a triangle is equal to the third angle then the triangle is right angled triangle.

If the bisector of the vertical angle of a triangle bisects the bese of the triangle;then the triangle is iscsceless.

The sum of the angles of a triangle is two right angles or 180^(@).

If the bisector of the exterior vertical angle of a triangle be parallel to the base.Show that the triangle is isosceles.

If the bisector of the exterior vertical angle of a triangle be parallel to the base.Show that the triangle is isosceles.

RD SHARMA-TRIANGLE AND ITS ANGLES-All Questions
  1. A B C is a triangle. The bisector of the exterior angle at B and th...

    Text Solution

    |

  2. The bisectors of base angles of a triangle cannot enclose a right an...

    Text Solution

    |

  3. If the bisectors of the base angles of a triangle enclose an angle o...

    Text Solution

    |

  4. In Figure, A E bisects /C A D\ a n d\ /B=/Cdot Prove that A E||B C

    Text Solution

    |

  5. In a parallelogram, the bisectors of any two consecutive angles inte...

    Text Solution

    |

  6. Fill in the blanks to make the following statements true: Sum of the...

    Text Solution

    |

  7. Fill in the blanks to make the following statements true: Sum of th...

    Text Solution

    |

  8. Define a triangle.

    Text Solution

    |

  9. Write the sum of the angles of an obtuse triangle.

    Text Solution

    |

  10. Can the sum of the two angles of a triangle be less than the third ang...

    Text Solution

    |

  11. If the angle of a triangle are in the ratio 2:1:3, then find the m...

    Text Solution

    |

  12. If A B C D is a rectangle with /B A C=32^@, find the measure of /D B C

    Text Solution

    |

  13. In a parallelogram A B C D diagonals A C and B D intersect at O and A ...

    Text Solution

    |

  14. State exterior angle theorem

    Text Solution

    |

  15. If the side B C of A B C is produced on both sides, then write the...

    Text Solution

    |

  16. In a triangle A B C , if A B=A C\ a n d\ A B is produced to D such tha...

    Text Solution

    |

  17. The sum of two angles of a triangle is equal to its third angle. De...

    Text Solution

    |

  18. In a rhombus A B C D , if /A C B=40^@, then /A D B=(a) 70^@ (b) 45...

    Text Solution

    |

  19. if A B D E and B D F G such that /F G H=125^0 and /B=55^0, find x\ a...

    Text Solution

    |

  20. side B C\ of A B C is produced to point D such that bisectors of /A ...

    Text Solution

    |