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Math·Geometry and Trigonometry·Lines, angles, and triangles

easy

In the figure shown, line $r$ is parallel to line $s$. A transversal $t$ intersects line $r$ and line $s$, forming an angle of $x^{\circ }$ at line $r$ and a corresponding angle of $49^{\circ }$ at line $s$. What is the value of $x$?

1

49