Equilateral Triangle

Written by Jerry Ratzlaff. Posted in Plane Geometry

  • equilateral triangleAn equilateral triangle is when all three angles are equal.
  • A equilateral triangle is a polygon.
  • The total of angles equal
  • \(\;x+y+z=180°\).
  • 3 edges
  • 3 vertexs

Edge formula

\(a = \frac {P}{3} \)

\(a = \frac {2}{3}\; 3^{3/4} \sqrt A \)

Where:

\(a\) = edge

\(P\) = perimeter

Perimeter formula

\(P = 3a \)

Where:

\(P\) = perimeter

\(a\) = edge

Area formula

\(A =\frac {sqrt{3}} {4} a^2 \)

Where:

\(A\) = area

\(a\) = edge