Question

prove that opposite angles formed by intersecting of two lines are congruent​

Answer 1

Answer:

If two lines intersect each other, then the vertically opposite angles are equal. Theorem 6.1 : If two lines intersect each other, then the vertically opposite angles are equal. In the statement above, it is given that 'two lines intersect each other'. So, let AB and CD be two lines intersecting at O.

Answer 2

Answer:

opposite angles are always equal because they are vertically opposite yo each other.