It has at least two radii, the radius of the circle going through the vertices and the radius of the inscribed circle touching all the sides.
A radius of a regular triangle is 12 . find the length of one side of the triangle?
Centre of area of a triangle is the centre point for a circumscribed radius which will pass through all 3 vertices of the triangle.
Using the cosine rule the biggest angle is: 82.81924422 degrees Using radius formula for circumcircle of a triangle the radius is: 3.023715784 cm
Where the side of the equilateral triangle is s and the radius of the inscribed circle is r:s = 2r * tan 30° = 48.50 cm
the formula for the arc of a triangle is the arc length is equal to the angle times the radius. s=arc length theta=angle made y length of the arc lenth r=radius s=theta times radius