- Clockwise from top left, the 3 lines are labeled t, m, and n.
- Line t intersects both line m and line n.
- At the intersection of line t and line m, 2 angles are labeled clockwise from top left as follows:
- Top right: x°
- Bottom left: y°
- At the intersection of line t and line n, 1 angle is labeled clockwise from top left as follows:
- Top left: z°
- A note indicates the figure is not drawn to scale.
In the figure, lines and are parallel. If and , what is the value of ?