Answer:
x = 35°
Step-by-step explanation:
We can apply rules about supplementary angles to find y. That horizontal line has a measure of 180°. Therefore, we know that:
180° = 56° + 51° + y
180° - 56° - 51° = y
73° = y
Since all interior angle of a triangle adds up to 180°, we know that x + y + 72° = 180°.
So:
x + 73° + 72° = 180°
x = 180° - 73° - 72°
x = 35°
Please let me know if you have any questions!
