Question

in fig find angle f​

Answer 1

Answer:

a+b+c = 180

80+60+c = 180

140+ c = 180

c = 180 - 140

c = 40

Answer 2

Answer:In triangles ABC and DEF, we have

AB/DF = BC/FE = CA/ ED = 1/2

​Therefore, by SSS-criterion of similarity, we have

△ABC∼△DEF

⇒ ∠A=∠D,∠B=∠F and ∠C=∠E

⇒ ∠D=80° ,∠F=60°

Hence, ∠F=60°