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Determine the values of $x$ and $y$.
Mathematics 0580 · IGCSE · Angles
Angles — practice question
The figure presents a triangle set between two parallel lines. The angle at the top is divided into two parts, marked $y^\circ$ and $x^\circ$. Along the bottom, the left exterior angle is $140^\circ$ and the right exterior angle is $120^\circ$. The diagram is not drawn to scale.