Let ABC be an equilateral triangle as shown below:Here, BC=AC=AB (Since the length of all sides is same) ⇒∠A=∠B=∠C (Sides opposite to the equal angles are equal.) Also, we know that​∠A+∠B+∠C=180∘⇒3∠A=180∘⇒∠A=60∘∴∠A=∠B=∠C=60∘​ So, the angles of an equilateral triangle are always 60∘ each.