1. Find the value of x if AB = 16, BC = 10, and CD = 8. (not drawn to scale) A C

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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### Geometry Problem on Secants and Circles

**Problem:**

In the diagram below, secants \( \overline{RST} \) and \( \overline{RQP} \), drawn from point \( R \), intersect circle \( O \) at \( S \), \( T \), \( Q \), and \( P \).

[Insert Diagram Here: A circle with center \( O \) is intersected by two secants \( \overline{RST} \) and \( \overline{RQP} \). The points \( S \), \( T \), \( Q \), and \( P \) lie on the circle, and the points \( R \), \( S \), \( T \), \( Q \), and \( P \) are labeled inside the diagram with secants labeled clearly.]

If \( RS = 6 \), \( ST = 4 \), and \( RP = 15 \), what is the length of \( RQ \)?

**Detailed Explanation:**

To solve this problem, we will use the Secant-Secant Power Theorem, which states that for two secant segments drawn from the same external point, the product of the lengths of one secant segment (external segment + internal segment) and its external segment is equal to the product of the lengths of the other secant segment and its external segment.

According to the theorem:
\[ RS \times RT = RQ \times RP \]

Given:
\[ RS = 6 \]
\[ ST = 4 \]
\[ RP = 15 \]

First, calculate \( RT \) (the total length of secant \( \overline{RST} \)):
\[ RT = RS + ST = 6 + 4 = 10 \]

Next, let \( RQ \) be \( x \).

Using the theorem:
\[ RS \times RT = RQ \times RP \]
\[ 6 \times 10 = x \times 15 \]
\[ 60 = 15x \]

Solve for \( x \):
\[ x = \frac{60}{15} = 4 \]

Therefore, the length of \( RQ \) is \( 4 \).
Transcribed Image Text:### Geometry Problem on Secants and Circles **Problem:** In the diagram below, secants \( \overline{RST} \) and \( \overline{RQP} \), drawn from point \( R \), intersect circle \( O \) at \( S \), \( T \), \( Q \), and \( P \). [Insert Diagram Here: A circle with center \( O \) is intersected by two secants \( \overline{RST} \) and \( \overline{RQP} \). The points \( S \), \( T \), \( Q \), and \( P \) lie on the circle, and the points \( R \), \( S \), \( T \), \( Q \), and \( P \) are labeled inside the diagram with secants labeled clearly.] If \( RS = 6 \), \( ST = 4 \), and \( RP = 15 \), what is the length of \( RQ \)? **Detailed Explanation:** To solve this problem, we will use the Secant-Secant Power Theorem, which states that for two secant segments drawn from the same external point, the product of the lengths of one secant segment (external segment + internal segment) and its external segment is equal to the product of the lengths of the other secant segment and its external segment. According to the theorem: \[ RS \times RT = RQ \times RP \] Given: \[ RS = 6 \] \[ ST = 4 \] \[ RP = 15 \] First, calculate \( RT \) (the total length of secant \( \overline{RST} \)): \[ RT = RS + ST = 6 + 4 = 10 \] Next, let \( RQ \) be \( x \). Using the theorem: \[ RS \times RT = RQ \times RP \] \[ 6 \times 10 = x \times 15 \] \[ 60 = 15x \] Solve for \( x \): \[ x = \frac{60}{15} = 4 \] Therefore, the length of \( RQ \) is \( 4 \).
### Problem Statement:

1. **Find the value of \( x \) if \( AB = 16 \), \( BC = 10 \), and \( CD = 8 \). (not drawn to scale)**

### Diagram Explanation:
The provided diagram illustrates a circle with the following components:

- \( A, B, C, \) and \( D \) are points on the diagram.
- Points \( A \) and \( B \) lie on the circle, forming a chord.
- Points \( C \) and \( D \) are connected by a line segment, intersecting the circle at point \( D \) and forming another line segment with point \( B \).
- The line segments \( AB \) and \( CD \) intersect each other at point \( B \) outside the circle.
- The circle is not drawn to scale and is shown for illustrative purposes only.

### Known Values:
- \( AB = 16 \)
- \( BC = 10 \)
- \( CD = 8 \)

### Objective:
Determine the value of \( x \), where \( x \) represents the unknown length in the given configuration.
Transcribed Image Text:### Problem Statement: 1. **Find the value of \( x \) if \( AB = 16 \), \( BC = 10 \), and \( CD = 8 \). (not drawn to scale)** ### Diagram Explanation: The provided diagram illustrates a circle with the following components: - \( A, B, C, \) and \( D \) are points on the diagram. - Points \( A \) and \( B \) lie on the circle, forming a chord. - Points \( C \) and \( D \) are connected by a line segment, intersecting the circle at point \( D \) and forming another line segment with point \( B \). - The line segments \( AB \) and \( CD \) intersect each other at point \( B \) outside the circle. - The circle is not drawn to scale and is shown for illustrative purposes only. ### Known Values: - \( AB = 16 \) - \( BC = 10 \) - \( CD = 8 \) ### Objective: Determine the value of \( x \), where \( x \) represents the unknown length in the given configuration.
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