Mathematics
Assertion (A): In the figure, if O is the centre of the circle, then ∠BCD = 80°.
Reason (R): Exterior angle of a cyclic quadrilateral is equal to the interior opposite angle.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
Related Questions
ABCD is a cyclic quadrilateral. If ∠BAD = (2x + 5)° and ∠BCD = (x + 10)°, then x is equal to :
65°
45°
55°
5°
Assertion (A): In the given figure, if O is the centre of the circle, then ∠ACB = 40°.
Reason (R): Angle at the centre is double the angle at the remaining part of the circle.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
Assertion (A): In the figure, ∠ACB = 70°.
Reason (R): Opposite angles of a cyclic quadrilateral are equal.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
Assertion (A): In the figure, if AB is a diameter of the circle, then ∠BAC = 50°.
Reason (R): Sum of two angles of a cyclic quadrilateral is always 180°.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
