Question

How to solve sum no 9 from the attachment given below??

Answer 1

Answer:

which book is this???

Step-by-step explanation:

i want this...

Answer 2

Step-by-step explanation:

Sum of all angles of a triangle is 180degree.

angle P +angle Q+angleR=180.........(i)

angle Q=angleR=2(angleP)

from (i)

2(angle P)+ 2( angle P) + angle P=180

5(angle P) =180

angle P =36

angle Q =2(angle P)

=2x 36

=72

angle R =angle Q

=72