# Triangle Calculator

Calculate the various properties of triangle for given values.

## Perimeter of a triangle

## Formula

**Area of triangle: **

[ l×b/2 ]

**Perimeter of Triangle:**

[ (a + b + c) ]

**Area of Equilateral Triangle:**

[ (Sqrt(3)/4)×(side)² ]

## Formula

Area of Triangle SAS(2sides & opposite angle):

[ ½×a×b×SinC ]

**Type of triangles with definition**

Triangle Type | Definition |

Equiangular triangle | The triangle which has all three interior angles equal having every angle equals to 60°, because always the sum of all three interior angles are 180°. The equiangular triangle has all three sides in same length (congruent). |

Equilateral triangle | The triangle which has all three sides equal in length and also having every interior angle equals to 60°, because always the sum of all three interior angles are 180°. |

Right triangles | The triangle which has one right angle (90 degrees) out of its interior angles. |

Obtuse triangle | The triangle which has one angle > 90 degrees out of its interior angles. |

Acute triangle | The triangle which has all the interior angles < 90 degrees. |

Scalene triangles | The triangle where every side has different length. The randomly drawn triangles having all three different interior-angles called scalene triangle. The triangle is scalene if all the sides has different lengths or all three angles are different. |

Isosceles triangles | The triangle where two sides has same length. The isosceles triangle also has two interior-angles of same degree. In the case of isosceles triangle we can find the other two interior angle if one interior angle is given. |