01:28:25 What are the missing angle measures in parallelogram 70° RSTU? mzR = 70°, mLT = 110°, mzU = 110° %3D O mzR = 110°, mzT = 110°, m2U = 70° OM R = 110°, mzT = 70°, mzU = 110° m²R = 70°, mzT = 110°, m2U = 70° R %3D %3D %3D Mark this and return Save and Exit Next Submit
01:28:25 What are the missing angle measures in parallelogram 70° RSTU? mzR = 70°, mLT = 110°, mzU = 110° %3D O mzR = 110°, mzT = 110°, m2U = 70° OM R = 110°, mzT = 70°, mzU = 110° m²R = 70°, mzT = 110°, m2U = 70° R %3D %3D %3D Mark this and return Save and Exit Next Submit
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:### Determining Missing Angles in a Parallelogram
In the image, we have the parallelogram RSTU with one angle measurement provided. The angle at vertex \( S \) is given as \( 70^\circ \).
#### Question:
**What are the missing angle measures in parallelogram RSTU?**
#### Answer Choices:
1. \( m \angle R = 70^\circ \), \( m \angle T = 110^\circ \), \( m \angle U = 110^\circ \)
2. \( m \angle R = 110^\circ \), \( m \angle T = 110^\circ \), \( m \angle U = 70^\circ \)
3. \( m \angle R = 110^\circ \), \( m \angle T = 70^\circ \), \( m \angle U = 110^\circ \)
4. \( m \angle R = 70^\circ \), \( m \angle T = 110^\circ \), \( m \angle U = 70^\circ \)
#### Diagram Explanation:
The parallelogram RSTU is depicted with:
- \( S \) positioned at the bottom left,
- \( R \) at the bottom right,
- \( T \) at the top right, and
- \( U \) at the top left.
The image indicates angle measurement at:
- \( m \angle S = 70^\circ \).
#### Analyzing Angles in Parallelograms:
In a parallelogram:
1. Opposite angles are equal.
2. Consecutive angles are supplementary, meaning they add up to \( 180^\circ \).
Given \( m \angle S = 70^\circ \):
- \( m \angle R \), opposite to \( m \angle S \), also equals \( 70^\circ \).
- Consecutive angles \( m \angle T \) and \( m \angle U \):
- \( m \angle T = 180^\circ - 70^\circ = 110^\circ \)
- \( m \angle U = 110^\circ \)
Therefore, the correct angle measures are:
- \( m \angle R = 70^\circ \),
- \( m \angle T = 110^\circ \),
- \( m \angle U = 110^\circ \).
Thus, the correct answer
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