Question

${\bf{Theorem \:6.1:}}$ If two lines intersect each other, then the vertically opposite angle

$\red{\bf{Proof:}}$ In the statement above, it is given
that 'two lines intersect each other. So, let
So
AB and CD be two lines intersecting at O as
shown in Fig. 6.8. They lead to two pairs of
vertically opposite angles, namely.​

Answer 1

See the attachment

question is solved.

$\red{\bf{See\: the \:attachment}}$

$\green{\bf{question \:is \:solved.}}$

Answer 2

$\bf \red{Go \: through \: the \: attachment \: image.}$

Thank you!

@itzshivani