In Fig, A, B, C are collinear points and ∠DBA = ∠EBA.(i) Name two

1.	In Fig, A, B, C are collinear points and ∠DBA = ∠EBA.(i) Name two linear pairs.(ii) Name two pairs of supplementary angles.
Answer» (i) Two adjacent angles are said to be form a linear pair of angles, if their non-common arms are two opposite rays. Therefore linear pairs are ∠ABD and ∠DBC ∠ABE and ∠EBC (ii) We know that every linear pair forms supplementary angles, these angles are ∠ABD and ∠DBC ∠ABE and ∠EBC

In Fig, A, B, C are collinear points and ∠DBA = ∠EBA.(i) Name two linear pairs.(ii) Name two pairs of supplementary angles.

Answer»

(i) Two adjacent angles are said to be form a linear pair of angles, if their non-common arms are two opposite rays.

Therefore linear pairs are

∠ABD and ∠DBC

∠ABE and ∠EBC

(ii) We know that every linear pair forms supplementary angles, these angles are

∠ABD and ∠DBC

∠ABE and ∠EBC