Sample Test Item 41 (2003)

This test item is checking your understanding of corresponding angles.
If both L1 and L2 are parallel, then the two corresponding angles are congruent.
After this is proved, the rest is just alegbra. That is,
5x + 6 = 6x - 3
Combining like terms, we subtract 5x from both sides. At 3 to both sides. We have
9 = x.
or
x = 9.
Choice C is our only choice.

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