Home
Class 9
MATHS
(True/ False) If A, B, C and D are four...

(True/ False) If A, B, C and D are four points such that `/_BAC = 45^@` and `/_BDC = 45^@`, then A, B, C, D are concyclic.

Promotional Banner

Topper's Solved these Questions

  • Areas of Parallelograms and Triangles

    MBD|Exercise Exercise|80 Videos
  • Co-Ordinate Geometry

    MBD|Exercise Exercise|40 Videos

Similar Questions

Explore conceptually related problems

(True/ False) If A, B, C, D are four points such that /_BAC = 30^@ and /_BDC = 60^@ , then D is the centre of the circle through A, B and C.

(True/ False) ABCD is a cyclic quadrilateral such that /_A = 90^@ , /_B = 70^2 , /_C = 95^@ and /_D = 105^2 .

In fig. , A, B, C, D are four points on a circle. AC and BD intersect at a point E such that /_BEC = 130^@ and /_ECD = 20^@ . Find /_BAC .

In fig. , A, B, C, D are four points on a circle. AC and BD intersect at a point E such that /_BEC = 130^@ and /_ECD = 20^@ . Find /_BAC .

If a, b, c and d are four coplanr points, then prove that [a b c]=[b c d]+[a b d]+[c a d] .

ABC is an isosceles triangle in which AB = AC. If D and E are the mid-points of AB and respectively, prove that B,C,D and E are concyclic.

True/False A,B,C,D are mid-points of sides of ||gm PQRS. If ar (PQRS) = 36cm^2 , then ar (ABCD) = 18cm^2

Say True or False. If m angleA= 45^@ and angleB=20^@ then m angleA gt m lt B

ABCD is a parallelogram. The circle through A,B is so drawn that it intersects AD at P and CB at Q. Prove that P,Q,C and D are concyclic.

If a,b,c and d are four positive real numbers such that abcd=1 , what is the minimum value of (1+a)(1+b)(1+c)(1+d) .

MBD-Circles-Exercise
  1. Match the following : .

    Text Solution

    |

  2. In DeltaABC which is not true :

    Text Solution

    |

  3. Find x+y+z

    Text Solution

    |

  4. The lengths of two parallel chords of a circle are 6 cm and 8 cm. If t...

    Text Solution

    |

  5. Let vertex of an angle ABC be located outside a circle and let the sid...

    Text Solution

    |

  6. Bisectors of angles A, B and C of a triangle ABC intersect its circumc...

    Text Solution

    |

  7. Two congruent circles intersect each other at points A and B. Through ...

    Text Solution

    |

  8. In any triangle ABC, if the angle bisector of /A and perpendicular bis...

    Text Solution

    |

  9. Find x+y+z

    Text Solution

    |

  10. Find x+y+z

    Text Solution

    |

  11. (True/ False) Two chords AB and CD of a circle are each at distances ...

    Text Solution

    |

  12. (True/ False) Two chords AB and AC of a circle with centre O are on t...

    Text Solution

    |

  13. (True/ False) Two congruent circles with centres O and O' intersect at...

    Text Solution

    |

  14. Through three collinear points a circle can be drawn.

    Text Solution

    |

  15. (True/ False) A circle of radius 3 cm can be drawn through two points...

    Text Solution

    |

  16. (True/ False) If AOB is a diameter of a circle and C is a point on th...

    Text Solution

    |

  17. (True/ False) ABCD is a cyclic quadrilateral such that /A = 90^@, /B ...

    Text Solution

    |

  18. (True/ False) If A, B, C, D are four points such that /BAC = 30^@ and...

    Text Solution

    |

  19. (True/ False) If A, B, C and D are four points such that /BAC = 45^@ ...

    Text Solution

    |

  20. (True/ False) In Fig. If AOB, is a diameter and /ADC = 120^@, then...

    Text Solution

    |