Question

15. If ABC and DEF are two 1 point triangles such that A ABC= AFDE and AB = 5 cm, B = 40° and ZA = 80° then which of the following is true ? * O DF = 5 cm , ​

Answer 1

Answer:

Step-by-step explanation:

∆ABC congruence to ∆FDE ,

then,

AB = FD

BC=DE

AC=FE

and

angle ABC = angle FDE

angle BCA = angle DEF

angle CAB =angle EFD

now, given, angle ABC = 40° and angle CAB = 80° and AB = 5 cm

so, angle FDE = 40° and angle EFD= 80°

and FD = 5 cm

also DF = 5 cm

and angle DEF = 60°