Math Problem Statement

In the image, two pairs of intersecting lines form angles labeled x°, y°, and 11y°. What are the values of x and y?

Solution

The image depicts a geometric diagram with two pairs of intersecting lines, creating several angles. The angles are marked xx^\circ, yy^\circ, and 11y11y^\circ. Let's analyze the relationships between these angles.

Step-by-Step Solution:

  1. Vertical Angles:

    • When two lines intersect, the opposite (or vertical) angles are equal. Therefore, the angle labeled xx^\circ is equal to the angle opposite it, also labeled xx^\circ.
    • Similarly, the angle labeled yy^\circ is equal to the angle opposite it, also labeled yy^\circ.
  2. Corresponding Angles:

    • If we assume the parallel nature of the lines (as suggested by the diagram structure), corresponding angles are equal. This could relate the xx^\circ and yy^\circ angles, but more information is needed for exact values unless parallel lines are confirmed.
  3. Linear Pair:

    • Angles that are on the same straight line add up to 180180^\circ. Therefore, if xx^\circ and 11y11y^\circ are on a straight line: x+11y=180x + 11y = 180
  4. Solving for yy^\circ:

    • The angles yy^\circ and 11y11y^\circ might also be linear pairs depending on the configuration, suggesting: y+11y=180y + 11y = 180 12y=18012y = 180 y=15y = 15^\circ
  5. Substituting to find xx^\circ:

    • Using y=15y = 15^\circ in the equation x+11y=180x + 11y = 180: x+11(15)=180x + 11(15) = 180 x+165=180x + 165 = 180 x=15x = 15^\circ

Thus, the solution gives y=15y = 15^\circ and x=15x = 15^\circ.

Would you like further details on any step or have any questions?

Follow-Up Questions:

  1. What is the relationship between corresponding and alternate angles?
  2. How would the solution change if the lines were not parallel?
  3. Can vertical angles be unequal under any circumstances?
  4. How do linear pairs relate to supplementary angles?
  5. What are the implications if multiple angles share a common vertex?

Tip: Always check if the lines in a geometric diagram are parallel, as it significantly impacts angle relationships.

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Math Problem Analysis

Mathematical Concepts

Geometry
Angles
Linear Pair
Vertical Angles

Formulas

x + 11y = 180 (linear pair)
y + 11y = 180 (linear pair)

Theorems

Vertical Angles Theorem: Opposite angles are equal when two lines intersect.
Linear Pair Theorem: Angles on a straight line add up to 180 degrees.

Suitable Grade Level

Grades 8-10