Question

9. AB and CD are parallel chords of a circle with centre
O. If M and N are the midpoints of AB and CD
respectively, prove that M, O and N lie in one straight
line.​

Answer 1

Step-by-step explanation:

draw line bo and co

am =mb because m is mid ponit

and bo =co = radius

same as

od = oc = radius

and nd = cn because n is mid point

and BC=AD = diameter and also cut lines of two parrallel lines

and angle ozd = angle bmo

so we can say mo and oz makes straight line mz .

answer