Math Problem Statement

Two parallel lines m and n are cut by a transversal. One angle on line m is given as (6x + 13)°, and two angles on line n are given as y° and (7x - 5)°. Solve for x and y.

Solution

The image shows two parallel lines, mm and nn, with a transversal cutting through them. There are angle expressions involving xx and yy in degrees marked on the diagram. Based on the given diagram, the angles involve a combination of:

  • (6x+13)(6x + 13)^\circ on line mm,
  • yy^\circ on line nn,
  • and (7x5)(7x - 5)^\circ also on line nn.

To solve for xx and yy, we can use the properties of angles formed by parallel lines and a transversal:

  1. Corresponding Angles: These angles are equal when a transversal cuts through parallel lines.

    The angle (6x+13)(6x + 13)^\circ on line mm and the angle (7x5)(7x - 5)^\circ on line nn are corresponding angles. So, we can set them equal: 6x+13=7x56x + 13 = 7x - 5

  2. Linear Pair (Supplementary Angles): The angles on a straight line (like yy^\circ and (7x5)(7x - 5)^\circ) add up to 180°.

Let's solve for xx first from the corresponding angles equation. I'll work that out now.From the equation 6x+13=7x56x + 13 = 7x - 5, we find that x=18x = 18.

Now that we know the value of xx, we can substitute it into the expression for yy^\circ using the supplementary angles property: y+(7x5)=180y^\circ + (7x - 5)^\circ = 180^\circ Let's calculate yy next.We have calculated that the angle 7x57x - 5 when x=18x = 18 is 121121^\circ. Since y+121=180y^\circ + 121^\circ = 180^\circ, solving for yy gives y=59y = 59^\circ.

Thus, the values are:

  • x=18x = 18
  • y=59y = 59^\circ

Would you like further details on any steps? Here are a few related questions to explore:

  1. How do corresponding angles relate to parallel lines and transversals?
  2. Why are the angles on a straight line supplementary?
  3. What are alternate interior angles, and how do they behave in parallel line situations?
  4. Can you explain the significance of transversal lines in geometry?
  5. How would you solve the problem if the lines were not parallel?

Tip: Remember, parallel lines maintain specific angle relationships, which are key to solving for unknown variables in geometric figures.

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Math Problem Analysis

Mathematical Concepts

Geometry
Parallel Lines
Transversals
Angle Properties

Formulas

Corresponding Angles: ∠1 = ∠2
Linear Pair (Supplementary Angles): ∠3 + ∠4 = 180°

Theorems

Corresponding Angles Postulate
Supplementary Angles Theorem

Suitable Grade Level

Grades 8-10