Math Problem Statement

Lines a, b, c, and d intersect as shown in the diagram. What are the values of x, y, and z?

Solution

The image contains a geometry problem involving intersecting lines aa, bb, cc, and dd, and asks to determine the values of the angles xx, yy, and zz. Let's analyze the provided information step by step:

Given Information:

  1. Angle of 124124^\circ is marked at the top where line aa intersects another line.
  2. Angle 4242^\circ is adjacent to the 124124^\circ angle (these are supplementary).
  3. Angle 5353^\circ is near the center where the lines meet.
  4. Angle 9595^\circ is given on the right side.
  5. Angle 3939^\circ is given near the bottom.
  6. A vertical line labeled xx^\circ needs to be determined.
  7. Another angle labeled yy^\circ is shown, needing calculation.
  8. Another angle labeled zz^\circ is shown.

Step-by-Step Solution:

1. Find xx:

At the intersection of lines, the angle marked as xx^\circ is vertically opposite to the angle 124124^\circ. Vertically opposite angles are always equal. Hence: x=124x = 124^\circ

2. Find yy:

The angle yy^\circ and 9595^\circ are corresponding angles formed by the transversal. Hence, they are equal: y=95y = 95^\circ

3. Find zz:

To find zz, we can use the fact that it forms a straight line with the adjacent angle 3939^\circ. These angles are supplementary, meaning their sum is 180180^\circ: z+39=180z + 39^\circ = 180^\circ z=18039=141z = 180^\circ - 39^\circ = 141^\circ

Final Answers:

x=124,y=95,z=141x = 124^\circ, \quad y = 95^\circ, \quad z = 141^\circ

Let me know if you'd like more details or have any further questions.

Here are 5 related questions to further your understanding:

  1. What are vertically opposite angles, and why are they always equal?
  2. How do corresponding angles help in solving geometry problems involving transversals?
  3. What is the relationship between supplementary angles?
  4. Can you identify any alternate interior angles in the given diagram?
  5. How would the problem change if the lines were not parallel?

Tip: When working with parallel lines, always look for corresponding, alternate interior, or vertically opposite angles, as they simplify finding unknown angles!

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Math Problem Analysis

Mathematical Concepts

Geometry
Angles
Parallel Lines

Formulas

Sum of supplementary angles = 180°
Vertically opposite angles are equal
Corresponding angles are equal

Theorems

Supplementary Angles Theorem
Vertical Angles Theorem
Corresponding Angles Postulate

Suitable Grade Level

Grades 7-9