The Triangle having all three sides equal in Length and also all three angles are of 60° is Equilateral
Triangle . This Calculator will help us to find 4 Unknown variables by Providing only 1 variable value.

Select which value you are Providing (Side Length (a) , Perimeter (P) , SemiPerimeter (s) , Area (K) , Altitude (h) )
input value and Click on Calculate .

##### Equilateral Triangle Shape

A=Angle A

a=Side a

B=Angle B

b=Side b

C=Angle C

c=Side c

A=B=C=60^{o}

a=b=c

K=Area

P=Perimeter

s=SemiPerimeter

h=Altitude

Calculations Options

The Equilateral Triangle has equal side length and Angle.Using Equilateral Triangle Calculator we can get the value of Side Length (a) , Side Length (b) , Hypotenuse (c) , Area (K) , Perimeter (P) , SemiPerimeter (s) , Altitude (h) for Equilateral triangle. We can get the value of Four unknown variables only if values of one variables are known . By using following formula :

**Perimeter:**
P = 3a

Where

P = Perimeter

a = Side Length

**Semi Perimeter :**
s = 3a / 2

Where

s = Semi Perimeter

a = Side Length

**Area of Equilateral Triangle:**
K = (1/4)*√3a^{2}

Where

K = Area

a = Side Length

**Altitude of Equilateral Triangle:**
*h* = (1/2)*√3a

where

*h* = Altitude

a = Side Length

### How to use Equilateral Triangle Calculator?

Step by step procedure for Equilateral Triangle Calculator is as follows.

**Step 1: **Select which value you will be providing? Dropdown has Side (a) , Area (K) , Perimeter (P) , SemiPerimeter (s) , Altitude (h) options.

**Step 2: **Input appropriate value as per selected type in Step 1.

**Step 3: **Now click on "Calculate" button to get result.

You will get Side (a) , Area (A) , Perimeter(P) , SemiPerimeter (s) , Altitude (h) as per you selection and value input.