Question

∆abc equal to ∆def then a=60 ,b=40 find angle c

Answer 1

Step-by-step explanation:

By angle sum property

a+b+c= 180

So,

c=180-60-40

c=80

Answer 2

sum of all angles of a triangle is equal to 180 degree

so, in triangle abc

angle a + Angle b + angle c =180 degree

angle a = 180-(60+40)

Angle a= 180-100

= 80 degree

thus your answer is,

angle a is equal to 80 degree