Enter side length
How does the Equilateral Triangle Calculator work?
Free Equilateral Triangle Calculator - Given a side (a), this calculates the following items of the equilateral triangle:
* Perimeter (P)
* Semi-Perimeter (s)
* Area (A)
* altitudes (ha,hb,hc)
* medians (ma,mb,mc)
* angle bisectors (ta,tb,tc)
* Circumscribed Circle Radius (R)
* Inscribed Circle Radius (r)
This calculator has 1 input.
What 3 formulas are used for the Equilateral Triangle Calculator?
P = 3a
s = ½P
A = a22√3/4
What 6 concepts are covered in the Equilateral Triangle Calculator?
altitude
segment from the vertex of a triangle ot the other side of the triangle
area
Number of square units covering the shape
equilateral triangle
A triangle with 3 equal sides
perimeter
The distance around a shape or object
radius
Distance from the center of a circle to the edge
C/2π
triangle
a flat geometric figure that has three sides and three angles
Example calculations for the Equilateral Triangle Calculator



Equilateral Triangle Calculator Video

Equilateral Triangle Calculator Video