Answer:
x=31°, y=52°,z=97°
Step-by-step explanation:
The interior angles of a triangle sum up to 180°
y°+ 31°+ 97°= 180°
y° = 180 - 31° - 97°
y=180°-128°
y° = 52°
Alternative angles are equal
x= 31°
Two opposite angles of a parallelogram are equal
z°= 97°
Therefore x=31°,y=52° and z=97°
The last choice is correct.
