Answer :
All interior angles of an equilateral triangle are equal measuring 60° each.
Since, sum of interior angles of a polygon is given by the expression,
Sum of interior angles of a polygon = (n - 2) × 180°
Where, n = number of sides of the polygon.
If it's a triangle, n = 3
From the given expression,
Sum of all interior angles = (3 - 2) × 180°
= 180°
Since, all interior angles of an equilateral triangle are equal in measure.
Measure of each angle = [tex]\frac{180^{\circ}}{3}[/tex]
= 60°
Hence, measure of all interior angles of an equilateral triangles is 60°.
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