A triangle has angle <1 and <2 as a remote interior angles with respect to exterior angle <3. Given that m<1 =50 and m<2=70, Alicia reasoned that m<3 must be 60. Explain Alicias error
∠1 = 50° ∠2=70°
If ∠3 is exterior ansgle with respect to ∠1 and ∠2, ∠3 must be ∠1+∠2 = 50°+70° =120°..Whereas, the interior angle with ∠3 will be 180°-120°=60°
