Mathematics
The figure given below, shows a circle with centre O.
Given : ∠AOC = a and ∠ABC = b.
(i) Find the relationship between a and b.
(ii) Find the measure of angle OAB, if OABC is a parallelogram.
Related Questions
In the given figure, AB = AC. Prove that DECB is an isosceles trapezium.
Prove that:
(i) the parallelogram, inscribed in a circle, is a rectangle.
(ii) the rhombus, inscribed in a circle, is a square.
In the given figure, SP is the bisector of ∠RPT and PQRS is a cyclic quadrilateral. Prove that :
SQ = SR.
In the figure given, RS is a diameter of the circle. NM is parallel to RS and ∠MRS = 29°.
Calculate :
(i) ∠RNM,
(ii) ∠NRM.
