Math Problem Statement

In the figure below, g || o. Find the values of z and x.

Solution

In this problem, we have two parallel lines, gog \parallel o, and a transversal line nn that intersects both of these parallel lines. We are tasked with finding the values of zz and xx based on the angles provided.

Step-by-Step Solution:

1. Identifying angle relationships:

  • The 85° angle and zz^\circ angle are alternate interior angles because gog \parallel o and nn is a transversal. Alternate interior angles are congruent when lines are parallel, so: z=85z = 85^\circ

2. Solving for xx:

  • The angle (6x25)(6x - 25)^\circ is supplementary to the angle zz^\circ (since these two form a straight line on the same side of the transversal nn). Supplementary angles add up to 180°, so: z+(6x25)=180z + (6x - 25) = 180 Substituting z=85z = 85^\circ: 85+(6x25)=18085 + (6x - 25) = 180 Simplifying: 85+6x25=18085 + 6x - 25 = 180 6x+60=1806x + 60 = 180 6x=1206x = 120 x=20x = 20

Final Answers:

  • z=85z = 85^\circ
  • x=20x = 20

Would you like more details on any of these steps, or do you have any questions?

5 Related Questions:

  1. What are alternate interior angles, and how are they used in geometry?
  2. How do you determine if two angles are supplementary?
  3. What are corresponding angles, and how do they differ from alternate interior angles?
  4. Can we always use the same reasoning for angles when the lines are not parallel?
  5. How do transversal lines affect angle relationships?

Tip:

When working with parallel lines and a transversal, always look for angle relationships like alternate interior angles or corresponding angles. These can greatly simplify solving for unknowns!

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Math Problem Analysis

Mathematical Concepts

Parallel Lines
Transversal
Alternate Interior Angles
Supplementary Angles

Formulas

Alternate interior angles are congruent when lines are parallel
Supplementary angles add up to 180°

Theorems

Alternate Interior Angles Theorem
Supplementary Angles Theorem

Suitable Grade Level

Grades 7-9