Question

please solved this question​

Answer 1

Step-by-step explanation:

a) sum of all angles of triangle =180°

/_ A +/_B +/_c =180°

45° + 65° +/_c = 180°

110°+/_c = 180°

/_c =180°-110°

/_ c =70°

b) sum of all angles of triangle =180°

/_A+/_B+/_C = 180°

120°+30°+/_c=180°

150° +/_c =180°

/_c =180°-150°

/_c = 30°

c) /_A+/_B+/_C=180°

75°+75°+/_B = 180°.......... /_a=/_c =75°

150°+/_B = 180°

/_B =180°-150°

/_B = 30°

d) /_A+ /_B+/_C= 180°

/_a +/_b +90°=180°

/_a +/_b =180°-90°

/_a +/_b = 90°

/_a =/_ b= 45°