Question

find the measurements of the angle of an equilateral triangle using the angle sum property of a triangle.

Answer 1

Answer:

Let all angles = x( because all angles are equal in eq. Triangle)

We know that sum of interior angles of triangle is 180°

so, x+x+x = 180°

= 3x= 180°

= x = 180/3

= x = 60°

Each angle is if 60° in equilateral triangle

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Answer 2

Answer:

each angle=60

Step-by-step explanation:

In an equilateral triangle all angles are equal,so angle 1=angle 2=angle 3.

so,the measure of angle 1=x

By the angle sum property of triangles =a+b+c=180

Angle 1+ Angle 2+Angle 3=180

=angle 1+ angle 1+ angle 1=180

(hence,all angles are equal)

=3(angle 1)=180

=angle 1=180/3

=angle 1=60

=angle 1=angle 2=angle 3=60

ans•hence,proved

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