Respuesta :

Answer:

∠ Q = 60°

Step-by-step explanation:

given Δ QRS is equilateral

In an equilateral triangle

• the sides are congruent ( equal )

• the angles are congruent

Then

RQ = RS = QS = 4 cm

∠ Q = ∠ R = ∠ S = 60° ( 180° ÷ 3 )