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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
Transcribed Image Text:**Transcription and Explanation for Educational Website**
**Given Information:**
- Lines \( L1 \) are parallel to \( L2 \) (written as \( L1 \parallel L2 \)).
- Measure of angle 2 (\( m\angle 2 \)) is \( 132^\circ \).
**Diagram Description:**
The diagram shows two parallel lines, \( L1 \) and \( L2 \), intersected by a transversal \( T1 \). This creates a series of angles at the intersections. The angles are labeled from 1 to 8.
**Task:**
Determine the measure of all other angles and provide reasons for each.
**Table for Angle Measurements and Reasons:**
| Angle | Measure | Reason |
|-------|---------|--------------------------------------|
| \( \angle 1 \) | \( 48^\circ \) | Supplementary (with \(\angle 2\)) |
| \( \angle 2 \) | \( 132^\circ \) | Given |
| \( \angle 3 \) | \( 48^\circ \) | Corresponding (with \(\angle 1\)) |
| \( \angle 4 \) | \( 132^\circ \) | Vertical (equal to \(\angle 2\)) |
| \( \angle 5 \) | \( 48^\circ \) | Corresponding (with \(\angle 3\)) |
| \( \angle 6 \) | \( 132^\circ \) | Alternate Interior (with \(\angle 2\)) |
| \( \angle 7 \) | \( 48^\circ \) | Vertical (equal to \(\angle 5\)) |
| \( \angle 8 \) | \( 132^\circ \) | Supplementary (with \(\angle 5\)) |
**Explanation:**
- **Supplementary Angles:** Two angles that add up to \( 180^\circ \).
- **Vertical Angles:** Angles opposite each other when two lines cross; they are always equal.
- **Corresponding Angles:** Angles that are in the same position at each intersection where a transversal crosses parallel lines; they are equal.
- **Alternate Interior Angles:** Angles that are on opposite sides of the transversal and inside the two lines; when the lines are parallel, these angles are
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