Question

find the unknown angle a and b in each of the following ​

Answer 1

Step-by-step explanation:

angle PQR= 180- 60°

angle PQR=120°

similarly,

angle TPQ= 130°

angle STP=105°

sum of interior angle of a pentagon is 540°

therefore 120°+130°+105°+131°+angleSRQ= 540°

angle SRQ= 540°- 486

angle SRQ= 74°

a=180°-74°

a=106°