It is known that C and D are points outside the line AB, and Ca = CB, Da = dB. It is proved that the straight line CD bisects AB vertically Prove with the vertical bisector of line segment

It is known that C and D are points outside the line AB, and Ca = CB, Da = dB. It is proved that the straight line CD bisects AB vertically Prove with the vertical bisector of line segment

Prove: ∵ CA = CB ∵ point C is on the vertical bisector of line ab
Similarly, point D is also on the vertical bisector of line ab
The straight line CD is the vertical bisector of line AB (two points determine a straight line)
The straight line CD bisects AB vertically