Question #7b017
1 Answer
Mar 25, 2017
Not valid.
Explanation:
The
#color(blue)"sum of the angles at a point" =360^@# To find z, sum the 4 given angles and subtract the result from 360.
#rArr(2xx108^2)+(2xx72^@)=216+144=360^@# The 4 given angles make up the sum.
