Question

find x+y+z
by this photo please ​

Answer 1

Answer:

$x = 180° - 40°= 140°$---stright angle

$z = 180° - 30° = 150°$-----stright angle

$y = 180° - [{180° - (30° + 40°)}]$

$y = 70$

$x + y + z = 140° + 150° + 70°$

$x + y + z = 360°$