Question

find the value of the missing angle

Answer 1

You must firstuse the number of sides to find out how much all the angles should sum up to\[\left( 5-2 \right)*180 = 540\]
so then use the already given angles and add them up
\[90+90+150+150= 480\]
\[540-480=60\]

Answer 2

thanks hon :)