We know that when a line is intersected by a transversal then
Corresponding angles are equal
Alternate interior angles are equal
Vertically opposite angles are equal
and also Sum of all the angles in a straight line is 180o
∠CMQ=60o
=>∠LMD=60o [ ∵ vertically opposite angles are equal]
=>∠QMD=180−60o [ ∵sum of angles in a straight line is 180o]
∴ ∠QMD=120o
=>∠CML=120o [ ∵ vertically opposite angles are equal]
=>∠MLB=120o [ ∵ Alternate interior angles are equal]
=>∠LMD=MLA=60o [ ∵ Alternate interior angles are equal]
∴ ∠MLA=PLB=60o [ ∵ vertically opposite angles are equal]
=>∠MLB=∠ALP=120o [ ∵ vertically opposite angles are equal]
∴ ∠CMQ=60o, ∠QMD=120o, ∠CML=120o, ∠LMD=60o,
∠MLA=60o , ∠MLB=120o, ∠ALP=120o and ∠PLB=60o .