Respuesta :

ObadaYos

Answer:

the total of angle's in traingle is 180

so 85+53+c=180

c=180-138

c=42

YucksFath

Step-by-step explanation:

180° = m∠A + m∠B + m∠C

180° = 85° + 53° + m∠C

180° = 138° + m∠C

m∠C = 180° - 138°

= 42°

#CMIIW