Given three points A B and Con a circle explain how to const
     Given three points A, B, and Con a circle, explain how to construct all chords through the point C that are bisected by AB bar.   
  
  Solution
step 1: take the length of BC.
step 2: construct AD , which lenth is equal to BC
step 3: here BD || AC
step 4: draw CD
now, AD=BC and AC||BD, so ACBD is a isoscale trapizoid
we know diagonals of isoscale trapizoid intersect each other at half.
so, AB is the bisector of CD. (Proved)

