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The problem appears to involve a diagram where two lines are intersecting, and various angles are formed. Specifically, you are asked to find the values of angles \( a \), \( b \), \( c \), \( d \), \( e \), \( f \), and \( g \), and the angle \( \angle CBG = 18^\circ \) is given.

Here’s how we can approach solving this:

### Step-by-Step Analysis:
1. **Vertical Angles (Opposite Angles) Theorem**:
   - When two lines intersect, the opposite (vertical) angles are always equal. This means that:
     - \( a = c \)
     - \( b = d \)
     - \( e = g \)
     - \( f = g \)

2. **Supplementary Angles**:
   - Any adjacent angles formed by two intersecting lines are supplementary, meaning they add up to \( 180^\circ \). For example:
     - \( a + b = 180^\circ \)
     - \( c + d = 180^\circ \)

3. **Given Angle**:
   - \( \angle CBG = 18^\circ \), which means one of the angles at point \( B \) or \( G \) is \( 18^\circ \). Based on the diagram, this could be angle \( g \).

### Solution:

Given \( \angle g = 18^\circ \), we can now find the other angles using the properties of vertical and supplementary angles:

- \( f = g = 18^\circ \) (since opposite angles are equal)
- \( e = f = 18^\circ \)
- \( a = c \) and \( b = d \) are still to be found, but we know that:
  - \( a + b = 180^\circ \)
  - \( c + d = 180^\circ \)

From the diagram, we can infer the values of \( a \), \( b \), \( c \), \( d \) based on the relationships above.

Would you like more details or explanations about how to apply these angle theorems?

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### Follow-up Questions:
1. What are vertical angles, and how are they used to solve this problem?
2. Can you explain why adjacent angles formed by intersecting lines are supplementary?
3. How would the solution change if the given angle was different?
4. What is the sum of all angles around a point, and how can this help in geometry problems?
5. How does knowing one angle help in calculating others in such geometric diagrams?

### Tip:
Always remember that vertical angles are equal and that adjacent angles on a straight line add up to \( 180^\circ \). These basic properties are key to solving many geometric problems!

Find a, b, c, d, e, f, and g in the given figure.

Learn how to find angles a, b, c, d, e, f, and g in an intersecting line diagram where the angle CBG is 18°. This problem uses key geometric concepts like vertical and supplementary angles. Suitable for students in Grades 6-8.

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