from itertools import product
import math

def compare(a, b):
    return abs(a - b) < 10 ** -6

def vector(x1, y1, x2, y2):
    return math.sqrt((x2 - x1) ** 2 + (y2 -y1) ** 2)

def test(x1, y1, x2, y2, x3, y3):
    a = vector(x1, y1, x2, y2)
    b = vector(x2, y2, x3, y3)
    c = vector(x3, y3, x1, y1)
    if a < b + c and b < a + c and c < b + a:
        if compare(a, b) and compare(b, c) and compare(c, a):
            return "ISOSCELES TRIANGLE" + " " + str(a)
        else:
            if compare(a, b) or compare(b, c) or compare(c, a):
                if not compare(a, b):
                    return "EQUILATERAL TRIANGLE" + " " + str(min(a, b)) + " " + str(max(a, b))
                else:
                    return "EQUILATERAL TRIANGLE" + " " + str(min(b, c)) + " " + str(max(b, c))
            else:
                return "SIMPLE TRIANGLE" + " " + str(a) + " " + str(b) + " " + str(c)
    else:
        return "NOT TRIANGLE"

k =  int(input())
mapX = []
mapY = []
comb = []
count = 0
while count != k:
    count += 1
    x, y = input().split(" ")
    mapX.append(float(x))
    mapY.append(float(y))
a = 0
b = 0
c = 0
for a, b, c in product(range(k+1), range(k+1), range(k+1)):
    if (not (a == b or b == c or a == c)) and a != 0 and b !=0 and c != 0:
        if a < b and b < c:
            a -= 1
            b -= 1
            c -= 1
            result = test(mapX[a], mapY[a], mapX[b], mapY[b], mapX[c], mapY[c])
            print(a+1, b+1, c+1, "-", result)