# Triangle.py - A simple class used to determine basic 
# geometric triangle types.
#
# Copyright (C) 2006,2007,2008  Mark Nenadov
#
# This program is free software; you can redistribute 
# it and/or modify it under the terms of the GNU General 
# Public License as published by the Free Software 
# Foundation; either version 2 of the License, or (at your 
# option) any later version.
#
# This program is distributed in the hope that it will 
# be useful, but WITHOUT ANY WARRANTY; without even the 
# implied warranty of MERCHANTABILITY or FITNESS FOR A 
# PARTICULAR PURPOSE.  See the GNU General Public 
# License for more details.
# 
# You should have received a copy of the GNU General 
# Public License along with this program; if not, 
# write to the Free Software Foundation, Inc., 
# 51  Franklin Street, Fifth Floor, Boston, MA  
# 02110-1301, USA.



true, false = 1, 0

def is_angle_acute(deg):
	if (deg > 0) and (deg < 90):
		return true
	return false

class Triangle:
	a = [0, 0, 0]			# angles
	s = [0, 0, 0]			# sides
	
	def isValid(self):
		if (self.a[0] + self.a[1] + self.a[2]) != 180:
			return false
		return true

	def isScalene(self):
		if (self.s[0] == self.s[1]):
			return false
		elif (self.s[0] == self.s[2]):
			return false
		elif (self.s[1] == self.s[2]):
			return false
		return true

	def isIsosceles(self):
		if self.s[0] == self.s[1]:
			if self.s[0] != self.s[2]:
				return true
		if self.s[0] == self.s[2]:
			if self.s[0] != self.s[1]:
				return true
		if self.s[1] == self.s[2]:
			if self.s[1] != self.s[0]:
				return true
	
	def isEquilateral(self):
		if (self.s[0] == self.s[1] == self.s[2]):
			return true
		return false

	def isEquiangular(self):
                if (self.a[0] == self.a[1] == self.a[2]):
                        return true
                return false

		 
	def isRight(self):
		if 90 in self.a:
			return true	
		return false

	def isObtuse(self):
		if self.a[0] > 90:
			return true
		elif self.a[1] > 90:
			return true
		elif self.a[2] > 90:
			return true
		return false

	def isAcute(self):
		if is_angle_acute(self.a[0]):
			if is_angle_acute(self.a[1]):
				if is_angle_acute(self.a[2]):
					return true
		return false


## Sample Code ##

t = Triangle()
t.a = [30, 30, 120]
t.s = [55, 65, 55]

if t.isValid():
	if t.isAcute():
		print("This triangle is Acute")
	if t.isRight():
		print("This triangle is Right")
	if t.isObtuse():
		print("This triangle is Obtuse")
	if t.isScalene():
		print("This triangle is Scalene")
	if t.isIsosceles():
		print("This triangle is Isosceles")
	if t.isEquilateral():
		print("This triangle is Equilateral")
	if t.isEquiangular():
		print("This triangle is Equiangular")
else:
	print("This triangle is invalid. Try again")