Question

pls answer this fast and correct pls ​

Answer 1

Answer:

(i) ∠4 and ∠1

(ii) ∠4 and ∠5

Step-by-step explanation:

vertically opposite angles are those which makes x i.e when 2 straight lines intersect each other then, opposite angles are equal.

(i) ∠4=∠1 (vertically opposite angles)

in a straight line, sum of adjacent angles is 180° is called linear pair.

(ii) ∠5+∠4=180° (linear pair)

Hence, ∠4 and ∠1 are vertically opposite angles, ∠4 and ∠5 forms linear pair.

Answer 2

Answer :

1) ∠1 = ∠4 , ∠5 = (∠2 + ∠3)

2) (∠1 , ∠5) ; ( ∠4 , ∠5) ; (∠1 , (∠2 + ∠3)) ; ( ∠4 , ( ∠2 + ∠3 ))

Explanation :

(i) Two straight lines intersect at a point (vertex) to form angles. The opposite pair of angles after the intersection of two straight lines are known

as vertically opposite angles.

So, ∠1 = ∠4 , ∠5 = (∠2 + ∠3) are pairs of vertically opposite angle

(ii) When two lines intersect each other, the adjacent angles make a linear pair.

(∠1,∠5) ; (∠4, ∠5) ; (∠1, (∠2 + ∠3)) ; (∠4, (∠2 + ∠3))