Question

Can someone please solve this for me WITHOUT using any quadrilateral property (only use triangle properties please). Thanks​

Answer 1

Answer:

$x + 70 + 55 = 180 (angle \: sum \: propety)\\ x + 125 = 180 \\ \\ x = 180 - 125 \\ x = 55 \\ \\ x + y + z = 180(angle sum property) \\ 55 + 90 + z = 180 \\ z + 145 = 180 \\ z = 180- 145 \\ z = 35$