# Triangle calculator

*You have entered side a, b and c (as equilateral triangle).*

### Equilateral triangle.

**Sides:**a = 8.000405E+25 b = 8.000405E+25 c = 8.000405E+25

**Area:**T = 2.77156189144E+51

**Perimeter:**p = 2.4001215E+26

**Semiperimeter:**s = 1.20006075E+26

**Angle**∠ A = α = 60° = 1.04771975512 rad

**Angle**∠ B = β = 60° = 1.04771975512 rad

**Angle**∠ C = γ = 60° = 1.04771975512 rad

**Height:**h

_{a}= 6.92855397056E+25

**Height:**h

_{b}= 6.92855397056E+25

**Height:**h

_{c}= 6.92855397056E+25

**Median:**m

_{a}= 6.92855397056E+25

**Median:**m

_{b}= 6.92855397056E+25

**Median:**m

_{c}= 6.92855397056E+25

**Inradius:**r = 2.30951799019E+25

**Circumradius:**R = 4.61903598038E+25

**Vertex coordinates:**A[8.000405E+25; 0] B[0; 0] C[4.0002025E+25; 6.92855397056E+25]

**Centroid:**CG[4.0002025E+25; 2.30951799019E+25]

**Coordinates of the circumscribed circle:**U[4.0002025E+25; 2.30951799019E+25]

**Coordinates of the inscribed circle:**I[4.0002025E+25; 2.30951799019E+25]

**Exterior(or external, outer) angles of the triangle:**

∠ A' = α' = 120° = 1.04771975512 rad

∠ B' = β' = 120° = 1.04771975512 rad

∠ C' = γ' = 120° = 1.04771975512 rad

Calculate another triangle

# How did we calculate this triangle?

### 1. Input data entered: side a, b and c (as equilateral triangle).

### 2. The triangle circumference is the sum of the lengths of its three sides

### 3. Semiperimeter of the triangle

### 4. The triangle area using Heron's formula

### 5. Calculate the heights of the triangle from its area.

### 6. Calculation of the inner angles of the triangle using a Law of Cosines

### 7. Inradius

### 8. Circumradius

### 9. Calculation of medians

Calculate another triangle