Question

in a triangle abc, if angle A=72 and angle B=63 find angle C

Answer 1

ATQ,
A=72+B=63+x=180
so,
135+x=180
x=45
therefore angle c is 45

Answer 2

three angles will measured at 180
so,
⇒A+B+C=180
⇒72+63+C =180
⇒135+C=180
⇒180-135 =C
⇒C=45 
ANGLE C =45