Solve for x: equal angles at a transversal
Write an equation from the angle relationship: equal angles are set equal, co-interior angles add to 180°. Then solve for x.
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Two parallel lines are cut by a transversal. Two alternate interior angles measure (x − 8)° and (3x − 34)°. Find x.
Answer: 13
Two parallel lines are cut by a transversal. Two alternate interior angles measure (3x − 7)° and (4x − 15)°. Find x.
Answer: 8
Two parallel lines are cut by a transversal. Two alternate interior angles measure (4x − 9)° and (2x + 13)°. Find x.
Answer: 11
Tip: Write an equation from the angle relationship: equal angles are set equal, co-interior angles add to 180°. Then solve for x.
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- Next in this topic Solve for x: co-interior angles Class 8
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