1 Answer

Ivan Pereira · Answer 1 · 2023-11-30T09:18:00+0000

Answer:

20.
$\angle3$

21.
$\angle F$

22.
$\angle BHF$

Vertical angle means opposite angles.

It states that If two lines intersect each other, then the vertically opposite angles are equal.

For eg :- In this diagram,

$\angle1 = \angle3$

$\angle4= \angle6$

Linear pair means to form 180°.

It states that the two axioms above together is called the Linear Pair Axiom.
If the sum of two adjacent angles is 180°, if non-common arms of the angles form a line.

For eg :- In this diagram,

$\angle1 + \angle2 = 180 \degree$

$\angle4 + \angle5= 180 \degree$