Answer:
See below ~
Explanation:
Q1
⇒ Remember that sides opposing larger angles are greater in size
⇒ 75° > 54° > 51°
⇒ AC > BC > AB
Q2
⇒ The exterior angles lie outside the triangle
⇒ ∠1 + ∠2 = ∠6 (Exterior Angle Property)
⇒ ∠1 + ∠2 = ∠P (Exterior Angle Property)
⇒ ∠3 = ∠5 (Vertical Angles)