Math Problem Statement

Consider the following figure.

A line and two segments form five labeled angles.

The line is horizontal.

The first segment starts near the left side of the line, travels up and to the left, and ends at an unknown distance.

The second segment starts near the right side of the line, travels up and to the left, and ends where the first segment ends.

∠1 is formed by the bottom left side of the first segment and the top side of the line.

∠2 is formed by the bottom right side of the first segment and the top side of the line.

∠3 is formed by the bottom left side of the second segment and the top side of the line.

∠4 is formed by the bottom right side of the second segment and the top side of the line.

∠5 is formed by the top right side of the first segment and the top left side of the second segment.

Given:

m∠1 = (8(x + 2))°

m∠3 = (8x − 6)°

m∠5 = (8(x + 1) − 2)°

Find:x

x =  

Solution

To solve for xx, we will use the relationships between the given angles and the fact that they add up to certain values due to their geometrical arrangement.

Step 1: Analyze the geometry of the figure.

From the description, we can make the following observations:

  • Since the line is horizontal, it forms a straight line, meaning the sum of the angles on one side of this line must be 180180^\circ.
  • 1\angle 1 and 2\angle 2 are adjacent angles that form a straight line, so their sum is 180180^\circ.
  • Similarly, 3\angle 3 and 4\angle 4 form a straight line, so their sum is also 180180^\circ.
  • 5\angle 5 is the angle between the two segments that meet at a common vertex.

Step 2: Write down the known values.

  • m1=8(x+2)m\angle 1 = 8(x + 2)^\circ
  • m3=8x6m\angle 3 = 8x - 6^\circ
  • m5=8(x+1)2m\angle 5 = 8(x + 1) - 2^\circ

Step 3: Use the fact that 1\angle 1 and 3\angle 3 form adjacent angles on opposite sides of the horizontal line.

Since the line is horizontal, the angles on either side should sum up to 180180^\circ: m1+m3=180m\angle 1 + m\angle 3 = 180^\circ Substitute the expressions for m1m\angle 1 and m3m\angle 3: 8(x+2)+(8x6)=1808(x + 2) + (8x - 6) = 180 Simplify the equation: 8x+16+8x6=1808x + 16 + 8x - 6 = 180 16x+10=18016x + 10 = 180 Subtract 10 from both sides: 16x=17016x = 170 Now, divide by 16: x=17016=10.625x = \frac{170}{16} = 10.625

Thus, the value of xx is 10.62510.625.

Would you like further details on the steps or more clarification? Here are some related questions:

  1. How do complementary and supplementary angles differ?
  2. Can we apply the same angle rules to parallel lines cut by a transversal?
  3. What is the significance of angle bisectors in geometry?
  4. How are angles categorized in geometry (e.g., acute, obtuse)?
  5. How can we use algebra to find unknown angle measures in more complex polygons?

Tip: Always consider the geometric relationships of angles (e.g., complementary, supplementary) when solving angle problems.

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Math Problem Analysis

Mathematical Concepts

Algebra
Angle Relationships
Geometry

Formulas

m∠1 + m∠3 = 180° (supplementary angles)
8(x + 2) + (8x - 6) = 180
Solve for x

Theorems

Supplementary Angles Theorem
Linear Pair Theorem

Suitable Grade Level

Grades 9-12