Question

The question is asked in the photo

Answer 1

Answer:

I can only help You for 1st Q

Step-by-step explanation:

a+b+k=180(angle sum property i.e., sum of angles of a∆ is 180)

j+l+I=180

h+m+g=180

e+n+f=180

c+o+d=180

Add these eq

a+b+k+j+l+i +h+m+g+e+n+f+c+o+d=5(180)

It can be written as

a+b+c+d+e+f+g+h+ i+j+(k+m+n+o)=5(180)

a+b+c+d+e+f+g+h+ I+j+360=5(180)

a+b+-----------+j=900-360

=540 ans