Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Question
![### Geometry Problem Explanation
#### Problem Statement:
The image shows a geometric figure with points labeled as \( W, X, Y, \) and \( Z \), forming two intersecting triangles inside a quadrilateral. The following conditions and measurements are provided:
1. **Condition**: \( XY = WZ \)
2. **Angle Measurements**:
- \( m\angle 2 = 36^\circ \)
- \( m\angle W = 57^\circ \)
3. **Objective**: Find \( m\angle 3 \)
#### Diagram Description:
The diagram consists of two intersecting triangles within a larger quadrilateral:
- **Vertices**:
- \(W\) on the bottom left of the diagram.
- \(X\) on the top left of the diagram.
- \(Y\) on the top right of the diagram.
- \(Z\) on the bottom right of the diagram.
- **Lines and Angles**:
- Line segments \(WX\), \(XY\), \(YZ\), and \(ZW\).
- The quadrilateral forms two triangles \(WXY\) and \(XYZ\).
- Angles within the quadrilateral are labeled as \(1, 2, 3,\) and \(4\).
#### Given Angles:
- \( m\angle 2 = 36^\circ \)
- \( m\angle W = 57^\circ \)
#### Task:
Find the measure of \( \angle 3 \).
#### Solution Steps:
To find \( m\angle 3 \), follow these logical steps of reasoning involving triangle properties and exterior angles:
1. **Triangle \( WXY \)**:
- Using the given \( m\angle W = 57^\circ \) and \( m\angle 2 = 36^\circ \).
2. **Triangle Angle Sum Property**:
- The sum of angles in any triangle is \( 180^\circ \).
- Therefore, we can write the equation for \( \triangle WXY \):
\[
m\angle 1 + m\angle 2 + m\angle W = 180^\circ
\]
- Substituting the given values:
\[
m\angle 1 + 36^\circ + 57^\circ = 180^\circ
\]
\[
m\angle 1 =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20047395-754f-4b4f-b55f-051358973abe%2F90fe0e56-e1dd-47ab-9a17-c916b257ff5f%2F9jpqsm.jpeg&w=3840&q=75)
Transcribed Image Text:### Geometry Problem Explanation
#### Problem Statement:
The image shows a geometric figure with points labeled as \( W, X, Y, \) and \( Z \), forming two intersecting triangles inside a quadrilateral. The following conditions and measurements are provided:
1. **Condition**: \( XY = WZ \)
2. **Angle Measurements**:
- \( m\angle 2 = 36^\circ \)
- \( m\angle W = 57^\circ \)
3. **Objective**: Find \( m\angle 3 \)
#### Diagram Description:
The diagram consists of two intersecting triangles within a larger quadrilateral:
- **Vertices**:
- \(W\) on the bottom left of the diagram.
- \(X\) on the top left of the diagram.
- \(Y\) on the top right of the diagram.
- \(Z\) on the bottom right of the diagram.
- **Lines and Angles**:
- Line segments \(WX\), \(XY\), \(YZ\), and \(ZW\).
- The quadrilateral forms two triangles \(WXY\) and \(XYZ\).
- Angles within the quadrilateral are labeled as \(1, 2, 3,\) and \(4\).
#### Given Angles:
- \( m\angle 2 = 36^\circ \)
- \( m\angle W = 57^\circ \)
#### Task:
Find the measure of \( \angle 3 \).
#### Solution Steps:
To find \( m\angle 3 \), follow these logical steps of reasoning involving triangle properties and exterior angles:
1. **Triangle \( WXY \)**:
- Using the given \( m\angle W = 57^\circ \) and \( m\angle 2 = 36^\circ \).
2. **Triangle Angle Sum Property**:
- The sum of angles in any triangle is \( 180^\circ \).
- Therefore, we can write the equation for \( \triangle WXY \):
\[
m\angle 1 + m\angle 2 + m\angle W = 180^\circ
\]
- Substituting the given values:
\[
m\angle 1 + 36^\circ + 57^\circ = 180^\circ
\]
\[
m\angle 1 =
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