I fear I'm a bit of a nerd so I find this stuff fun XD Pretty useless since I used the sprite's coordinates rather than letting you input values Drag the points then press space to confirm or click the small 'start' box in the bottom left for mobile (idek if area is working anymore T-T)
Feel free to remix/take code. I put a few notes in the code but it doesn't make much sense XD Equations I used: -'pythagorsus' of coordinates for side lengths -'cosine rule' for angles -'area of a triangle' for area (duhhh /j)