The Student Room Group

Have I done this correctly?

http://prntscr.com/b0wy6r

Also, I wanted to know is the quadrilateral AOCB a cyclic quadrilateral ? Or is it only a cyclic quadrilateral if the points touch the circumference of the circle? Thanks
Reply 1
Original post by junayd1998
http://prntscr.com/b0wy6r

Also, I wanted to know is the quadrilateral AOCB a cyclic quadrilateral ? Or is it only a cyclic quadrilateral if the points touch the circumference of the circle? Thanks


AOCB is not a cyclic quadrilateral - a cyclic quadrailateral is one whose vertices lie on the circumference of the circle.

Your answer is correct; full marks.
Reply 2
Original post by Zacken
AOCB is not a cyclic quadrilateral - a cyclic quadrailateral is one whose vertices lie on the circumference of the circle.

Your answer is correct; full marks.


Yay!!!!!!!!! Oh okay yeah that is what i thought.
Reply 3
Original post by Zacken
AOCB is not a cyclic quadrilateral - a cyclic quadrailateral is one whose vertices lie on the circumference of the circle.

Your answer is correct; full marks.


So AOCB is just a normal quadrilateral? That totals up to 360 degrees but opposite angles don't add up to 180?
Reply 4
Original post by junayd1998
So AOCB is just a normal quadrilateral? That totals up to 360 degrees but opposite angles don't add up to 180?


Yep.

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