Triangle angle sumThe sum of the anglesof anytriangle is 1800D Eg tt 180104776011 8181 1800of43 1127 165 1800 1 5 1 1618007 82 180082 82Check your work 711 98 4 140810840 150 7 7rememberallanglesinthetriang80 1800havetoaddupto18001 4 5 3 11 760494 5 3447 1156 5 32 114 510 4 55Check yourwork51 53 76 1800104 76 1800180 800