Step-by-step explanation:
y + 65°= 180° (Being co-interior angle)
y = 180° - 65°
y = 115°
Next we will find of the next co-interior angle which is A and D
(2x - 10)° + (3x + 20)° = 180° ( Same reason)
Now we will keep the like ones together.
2x° + 3x° - 10° + 20° = 180°
5x° + 10° = 180°
5x = 180° - 10°
5x = 170°
x = 170°/5
x = 34°
Now we need to find (2x - 10)° and (3x + 20)°
(2x - 10)°
=(2×34-10)°
=(68-10)°
=58°
(3x + 20)°
=(3×34-20)°
=(102-10)°
=92°
