Question

the bisector of angles of a parallelogram from any point are equal​

Answer 1

In a parallelogram, opposite angles are congruent(i.e. are of equal length).

Also, the opposite angles are of same measure.

Whereas the adjacent angles are supplementary(add up to 180 degrees).

Let a and b be measures of any two adjacent angles of a parallelogram,

⟹a+b=180