Math Problem Statement
Solution
In this image, we have two parallel lines and intersected by a transversal line. The angles given are and .
Since the lines are parallel, the two angles formed are alternate interior angles, which means they are equal. Therefore, we can set up the following equation:
Solving the Equation
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Rearrange the equation to bring like terms together:
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Solve for :
Answer
The value of is .
Would you like more details or have any questions about the solution?
Related Questions
- What are alternate interior angles, and why are they equal when lines are parallel?
- How would the problem change if the lines and were not parallel?
- What is the value of the angles when ?
- How can you identify which angles are alternate interior in a transversal setup?
- What other angle relationships exist in a transversal, such as corresponding angles?
Tip
Remember that when a transversal crosses two parallel lines, alternate interior angles are always congruent!
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Math Problem Analysis
Mathematical Concepts
Algebra
Parallel Lines
Transversals
Alternate Interior Angles
Formulas
Equation of alternate interior angles: angle 1 = angle 2
Theorems
Alternate Interior Angles Theorem
Suitable Grade Level
Grades 8-10
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