This is circle based question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
In the ques we have a circle ans , O is the centre of the given circle and OABC is a parallelogram
. BC is produced to meet the circle at D.
Now we have to Prove that ∠ABC = 2 ∠OAD.
ICSE Avichal publication
Understanding ICSE Mathematics
Question no 14