Home
Class 9
MATHS
If O is the circumcentre of a A B C and...

If `O` is the circumcentre of a ` A B C` and `O D_|_B C ,` prove that `/_B O D=/_adot`

Text Solution

AI Generated Solution

To prove that angle \( \angle BOD = \angle A \), we will follow these steps: ### Step 1: Understand the Given Information We know that \( O \) is the circumcenter of triangle \( ABC \), which means it is the center of the circumcircle of triangle \( ABC \). The line \( OD \) is perpendicular to line segment \( BC \). ### Step 2: Draw the Diagram Draw triangle \( ABC \) with circumcenter \( O \). Draw the line \( OD \) such that it is perpendicular to \( BC \). Label the points accordingly. ...
Promotional Banner

Topper's Solved these Questions

  • CIRCLES

    NCERT EXEMPLAR ENGLISH|Exercise Exercise 10.4|14 Videos
  • CIRCLES

    NCERT EXEMPLAR ENGLISH|Exercise Exercise 10.2|10 Videos
  • Areas of Parallelograms and Triangles

    NCERT EXEMPLAR ENGLISH|Exercise Exercise-9.4 Long Answer Type Questions|10 Videos
  • CONSTRUCTIONS

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Questions|5 Videos

Similar Questions

Explore conceptually related problems

If O is the circumcentre of /_\ A B C and O D_|_B C , prove that /_B O D=/_A

If O is the circumcentre of A B C , then find the value of /_O B C+\ /_B A C

O A B C is regular tetrahedron in which D is the circumcentre of O A B and E is the midpoint of edge A Cdot Prove that D E is equal to half the edge of tetrahedron.

O A B C is regular tetrahedron in which D is the circumcentre of O A B and E is the midpoint of edge A Cdot Prove that D E is equal to half the edge of tetrahedron.

In Figure, A B\ a n d\ A C are two equal chords of a circle whose centre is O . If O D\ _|_A B\ a n d\ O E\ _|_A C , prove that /_\A D E is an isosceles triangle.

In a quadrilateral A B C D ,A O and B O are the bisectors of A/_ and /_B respectively. Prove that /_A O B=1/2(/_C+/_D)dot

In a quadrilateral A B C D ,A O and B O are the bisectors of A/_ and /_B respectively. Prove that /_A O B=1/2(/_C+/_D)dot

In Figure, O is the centre of a circle and P O BISECTS /_A P D . Prove that A B=C D

In a quadrilateral A B C D ,C O and D O are the bisectors of /_C and /_D respectively. Prove that /_C O D=1/2(/_A+/_B)dot

In Figure, O is the mid point of A B and C D . Prove that (i) A O C~= B O D (ii) AC=BD

NCERT EXEMPLAR ENGLISH-CIRCLES-Exercise 10.3
  1. If two arcs of a circle (or of congruent circles) are congruent, then ...

    Text Solution

    |

  2. If the perpendicular bisector of a chord AB of a circle PXAQBY interse...

    Text Solution

    |

  3. A, B and C are three points on a circle. Prove that the perpendicular ...

    Text Solution

    |

  4. Two chords A B and A C of a circle are equal. Prove that the centre of...

    Text Solution

    |

  5. If a line segment joining mid-points of two chords of a circle passes ...

    Text Solution

    |

  6. ABCD is such a quadrilateral that A is the centre of the circle passin...

    Text Solution

    |

  7. If O is the circumcentre of a A B C and O D|B C , prove that /B O D=/...

    Text Solution

    |

  8. On a common hypotenuse AB, two right angled triangles, ACB and ADB are...

    Text Solution

    |

  9. Two chords AB and AC of a circle subtends angles equal to 90^(@) and 1...

    Text Solution

    |

  10. If BM and CN are the perpendiculars drawn on the sides AC and BC of th...

    Text Solution

    |

  11. If a line is drawn parallel to the base of an isosceles triangle to in...

    Text Solution

    |

  12. If the two sides of a pair of opposite sides of a cyclic quadrilate...

    Text Solution

    |

  13. The circumcentre of the DeltaABC" is O. Prove that "angleOBC+angleBAC=...

    Text Solution

    |

  14. A chord of a circle is equal to the radius of the circle find the angl...

    Text Solution

    |

  15. In figure, angleADC=130^(@)" and chord BC=chord BE. Find "angleCBE.

    Text Solution

    |

  16. In figure, angleACB=40^(@) ." Find "angleOAB.

    Text Solution

    |

  17. In Figure, A B C D is a cyclic quadrilateral whose side A B is a ...

    Text Solution

    |

  18. Two circles whose centres are O and O ' intersect at Pdot Throug...

    Text Solution

    |

  19. In figure, AOB is a diameter of the circle and C, D, E are any three ...

    Text Solution

    |

  20. In figure, angleOAB=30^(@) and angleOCB=57^(@)." Find "angleBOC and an...

    Text Solution

    |