Triangle

Challenge Overview

Determine if a triangle is equilateral, isosceles, or scalene.

Visit the triangle exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

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The following are the top 3 community solutions by stars:

Solution 1 by @joce (⭐ 25) — View on Exercism
Solution 2 by @AriSRileyA (⭐ 4) — View on Exercism
Solution 3 by @prettyleka (⭐ 1) — View on Exercism

Source: Exercism csharp/triangle

💡 View Solution

static class Triangle
{
    public static bool IsEquilateral(double a, double b, double c) => IsTriangle(a,b,c) && a == b && b == c;
    public static bool IsIsosceles(double a, double b, double c) => IsTriangle(a,b,c) && (a == b || b == c || a == c);
    public static bool IsScalene(double a, double b, double c) => IsTriangle(a,b,c) && (a != b && b != c && a != c);
    static bool IsTriangle(double a, double b, double c) => a + b > c && a + c > b && b + c > a;
}