In fig., write down(i) Each linear pair(ii) Each pair of vertically op

1.	In fig., write down(i) Each linear pair(ii) Each pair of vertically opposite angles.
Answer» (i) The two adjacent angles are said to form a linear pair of angles if their non – common arms are two opposite rays. ∠1 and ∠3 ∠1 and ∠2 ∠4 and ∠3 ∠4 and ∠2 ∠5 and ∠6 ∠5 and ∠7 ∠6 and ∠8 ∠7 and ∠8 (ii) The two angles formed by two intersecting lines and have no common arms are called vertically opposite angles. ∠1 and ∠4 ∠2 and ∠3 ∠5 and ∠8 ∠6 and ∠7

In fig., write down(i) Each linear pair(ii) Each pair of vertically opposite angles.

Answer»

(i) The two adjacent angles are said to form a linear pair of angles if their non – common arms are two opposite rays.

∠1 and ∠3

∠1 and ∠2

∠4 and ∠3

∠4 and ∠2

∠5 and ∠6

∠5 and ∠7

∠6 and ∠8

∠7 and ∠8

(ii) The two angles formed by two intersecting lines and have no common arms are called vertically opposite angles.

∠1 and ∠4

∠2 and ∠3

∠5 and ∠8

∠6 and ∠7