# Triangle

This page is about the `Triangle`

class available in `PeyrSharp.Core.Maths.Geometry`

. You can find here all of its constructors and properties.

## Compatibility

The `Triangle`

class is part of the `PeyrSharp.Core`

module, which is compatible with all of these frameworks and platforms:

Package/Platform | Windows | macOS | Linux + others |
---|---|---|---|

Core | ✅ | ✅ | ✅ |

Framework | .NET 5 | .NET 6 | .NET 7 |

Core | ✅ | ✅ | ✅ |

## Constructors

### Triangle(side1, side2, side3)

#### Definition

Initializes a `Triangle`

class from the length of its sides.

#### Arguments

Type | Name | Meaning |
---|---|---|

`double` | `side1` | The length of the first side of the triangle. |

`double` | `side2` | The length of the second side of the triangle. |

`double` | `side3` | The length of the third side of the triangle. |

WARNING

If `side1`

, `side2`

, or `side3`

≤ 0, a `DivideByZeroException`

will be thrown.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 10); // Creates a triangle
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 10); // Creates a triangle
```

### Triangle(width, height)

#### Definition

Initializes a `Triangle`

class from a width and height.

#### Arguments

Type | Name | Meaning |
---|---|---|

`double` | `width` | The width of the triangle. |

`double` | `height` | The height of the triangle. |

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20); // Creates a triangle with a width of 10 and a height of 20
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20); // Creates a triangle with a width of 10 and a height of 20
```

## Properties

### Area

#### Definition

`public double Area { get; }`

`public double Area { get; }`

The `Area`

property is a `double`

which returns the area of the triangle. You can only `get`

this property.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20);
var area = triangle.Area;
// area = 100
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20);
var area = triangle.Area;
// area = 100
```

### Perimeter

#### Definition

`public double Perimeter { get; }`

`public double Perimeter { get; }`

The `Perimeter`

property is a `double`

which returns the perimeter of the triangle. You can only `get`

this property.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 10, 20);
var perimeter = triangle.Perimeter;
// perimeter = 40
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 10, 20);
var perimeter = triangle.Perimeter;
// perimeter = 40
```

### Hypotenuse

#### Definition

`public double Hypotenuse { get; }`

`public double Hypotenuse { get; }`

The `Hypotenuse`

property is a `double`

which returns the hypotenuse of the triangle. You can only `get`

this property.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
// Assuming the triangle is right
Triangle triangle = new(3, 4, 5);
var hypotenuse = triangle.Hypotenuse;
// hypotenuse = 5
```

```
using PeyrSharp.Core.Maths.Geometry;
// Assuming the triangle is right
Triangle triangle = new(3, 4, 5);
var hypotenuse = triangle.Hypotenuse;
// hypotenuse = 5
```

### IsRight

#### Definition

`public bool IsRight { get; }`

`public bool IsRight { get; }`

The `IsRight`

property is a `bool`

which returns `true`

if the triangle is right. You can only `get`

this property.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(3, 4, 5);
var right = triangle.IsRight;
// right = true
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(3, 4, 5);
var right = triangle.IsRight;
// right = true
```

### CanBeBuilt

#### Definition

`public bool CanBeBuilt { get; }`

`public bool CanBeBuilt { get; }`

The `CanBeBuilt`

property is a `bool`

which returns `true`

if the triangle can be built. You can only `get`

this property.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(3, 4, 10);
var canBeBuilt = triangle.CanBeBuilt;
// canBeBuilt = false
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(3, 4, 10);
var canBeBuilt = triangle.CanBeBuilt;
// canBeBuilt = false
```

### Width

#### Definition

`public double Width { get; init; }`

`public double Width { get; init; }`

The `Width`

property is a `double`

which returns the width of the triangle, which was defined when initializing it. You can only `get`

this property.

WARNING

This property can be equal to `double.NaN`

if the class was not initialized with the `Triangle(width, height)`

constructor.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20);
var width = triangle.Width;
// width = 10
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20);
var width = triangle.Width;
// width = 10
```

### Height

#### Definition

`public double Height { get; init; }`

`public double Height { get; init; }`

The `Height`

property is a `double`

which returns the height of the triangle, which was defined when initializing it. You can only `get`

this property.

WARNING

This property can be equal to `double.NaN`

if the class was not initialized with the `Triangle(width, height)`

constructor.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20);
var height = triangle.Height;
// height = 20
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20);
var height = triangle.Height;
// height = 20
```

### Side1

#### Definition

`public double Side1 { get; init; }`

`public double Side1 { get; init; }`

The `Side1`

property is a `double`

which returns the length of the first side of the triangle, which was defined when initializing it. You can only `get`

this property.

WARNING

This property can be equal to `double.NaN`

if the class was not initialized with the `Triangle(side1, side2, side3)`

constructor.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 15);
var side1 = triangle.Side1;
// side1 = 10
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 15);
var side1 = triangle.Side1;
// side1 = 10
```

### Side2

#### Definition

`public double Side2 { get; init; }`

`public double Side2 { get; init; }`

The `Side2`

property is a `double`

which returns the length of the second side of the triangle, which was defined when initializing it. You can only `get`

this property.

WARNING

This property can be equal to `double.NaN`

if the class was not initialized with the `Triangle(side1, side2, side3)`

constructor.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 15);
var side2 = triangle.Side2;
// side2 = 20
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 15);
var side2 = triangle.Side2;
// side2 = 20
```

### Side3

#### Definition

`public double Side3 { get; init; }`

`public double Side3 { get; init; }`

The `Side3`

property is a `double`

which returns the length of the third side of the triangle, which was defined when initializing it. You can only `get`

this property.

WARNING

This property can be equal to `double.NaN`

if the class was not initialized with the `Triangle(side1, side2, side3)`

constructor.

#### Usage

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 15);
var side3 = triangle.Side3;
// side3 = 15
```

```
using PeyrSharp.Core.Maths.Geometry;
Triangle triangle = new(10, 20, 15);
var side3 = triangle.Side3;
// side3 = 15
```