triangel from 3 points...teech make it eezee
2 points hav same x=-2, so 1 side is vertikal
2 points hav same y=-3, so 1 side is horizontal...rite triangel
base=side2=9...x from -x tu+7
left side=2 points with x=-2...vertikal=from -3 tu +9...12
gett diagonal from sum av squares...yer in luk, its a 9-12-15 (big 3-4-5)
rim length=36