Math Problem Statement

Lines a and b are parallel and angles 2 and 4 each measure 32°. If lines l and m need to be parallel, what must be the value of x?

Solution

Let's analyze the diagram step-by-step.

Given Information:

  1. Lines aa and bb are parallel.
  2. Angles 22 and 44 each measure 3232^\circ.
  3. We need to determine the value of xx so that lines ll and mm are parallel.

Steps to Solve:

Step 1: Use the properties of parallel lines and corresponding angles.

  • For ll and mm to be parallel, the corresponding angles formed by a transversal must be equal.

Step 2: Analyze the geometry of the setup.

  • Angle xx is a combination of angle 11 and angle 33.
  • Angles 22 and 44 are given as 3232^\circ.

Step 3: Relationship between angles.

  • The sum of the angles on a straight line is 180180^\circ. Using this property: Angle 1=180Angle 2=18032=148.\text{Angle } 1 = 180^\circ - \text{Angle } 2 = 180^\circ - 32^\circ = 148^\circ.

Step 4: Confirm the parallelism condition.

  • If ll and mm are parallel, x=Angle 1+Angle 3x = \text{Angle } 1 + \text{Angle } 3. Since angle 3=323 = 32^\circ, we calculate: x=148+32=148.x = 148^\circ + 32^\circ = 148^\circ.

Final Answer:

The value of xx is 148.

Would you like a more detailed breakdown or have other questions?
Here are five related questions to consider:

  1. How can we generalize this problem for other angle measures?
  2. What are alternate methods to verify the parallelism condition?
  3. How does this problem change if angle 33 is unknown?
  4. Why do corresponding angles determine parallelism?
  5. Can we apply trigonometry to verify these angle relationships?

Tip: Always use properties of supplementary and corresponding angles to check parallelism in geometric diagrams.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Parallel lines
Corresponding angles
Supplementary angles

Formulas

Sum of angles on a straight line = 180°
x = Angle 1 + Angle 3

Theorems

Corresponding Angles Postulate
Supplementary Angles Theorem

Suitable Grade Level

Grades 8-10