Math Problem Statement

Find the measure of the missing angles: Given intersecting lines, one angle is labeled 30°, and two missing angles are labeled as b and c. Determine the values of b and c.

Solution

In the image, we have intersecting lines that form several angles. One of the angles is labeled as 3030^\circ, and the other two missing angles are labeled as bb and cc. Here's how we can solve for these angles:

  1. Vertical Angles: Vertical angles are equal. Since the 3030^\circ angle is vertically opposite to angle bb, we know that: b=30b = 30^\circ

  2. Linear Pair: Adjacent angles that form a straight line sum up to 180180^\circ. The angles bb and cc form a straight line, so: b+c=180b + c = 180^\circ Substituting b=30b = 30^\circ into this equation: 30+c=18030^\circ + c = 180^\circ Solving for cc: c=18030=150c = 180^\circ - 30^\circ = 150^\circ

Thus, the values of the missing angles are:

  • b=30b = 30^\circ
  • c=150c = 150^\circ

Would you like further details or explanations on any of these steps?

Here are 5 related questions to extend this problem:

  1. What are vertical angles, and why are they always equal?
  2. How do we apply the concept of supplementary angles to find missing angles?
  3. Can we extend this problem to three-dimensional space with intersecting planes?
  4. How do alternate interior angles work in parallel lines cut by a transversal?
  5. How would the calculation change if the given angle was 4545^\circ instead of 3030^\circ?

Tip: Always remember that angles formed by intersecting lines follow simple rules: vertical angles are equal, and adjacent angles sum to 180180^\circ.

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Math Problem Analysis

Mathematical Concepts

Geometry
Angles
Vertical Angles
Linear Pair

Formulas

b = 30° (Vertical Angles)
b + c = 180° (Linear Pair)

Theorems

Vertical Angles Theorem
Linear Pair Theorem

Suitable Grade Level

Grades 6-8