13. Determine whether each statement is true or false. (a) Two lines perpendicular to a third line are parallel. (b) Two planes perpendicular to a third plane are parallel. (c) Two lines perpendicular to a plane are parallel. (d) Two lines either intersect or are parallel. (e) A plane and a line either intersect or are parallel.

Elementary Geometry for College Students
6th Edition
ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:Daniel C. Alexander, Geralyn M. Koeberlein
Chapter10: Analytic Geometry
Section10.CT: Test
Problem 13CT: Using as few variables as possible, state the coordinates of each point if DEF is isosceles with ...
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**Question 13: Determine whether each statement is true or false.**

(a) Two lines perpendicular to a third line are parallel.
(b) Two planes perpendicular to a third plane are parallel.
(c) Two lines perpendicular to a plane are parallel.
(d) Two lines either intersect or are parallel.
(e) A plane and a line either intersect or are parallel. 

---

This description and the statements provided are typically part of a geometry or linear algebra curriculum. When interpreting the truthfulness of each statement, consider the following:

- For statement (a), think about the spatial orientation of lines in three dimensions.
- For statement (b), visualize the planes and their perpendicular relationship to a third plane.
- Statement (c) requires understanding the relationship between lines and planes in 3D geometry.
- Statement (d) is concerned with the fundamental nature of lines in Euclidean space.
- Statement (e) explores the interaction between different geometric elements: planes and lines.

Each statement can be verified through geometric principles and understanding of spatial relationships.
Transcribed Image Text:**Question 13: Determine whether each statement is true or false.** (a) Two lines perpendicular to a third line are parallel. (b) Two planes perpendicular to a third plane are parallel. (c) Two lines perpendicular to a plane are parallel. (d) Two lines either intersect or are parallel. (e) A plane and a line either intersect or are parallel. --- This description and the statements provided are typically part of a geometry or linear algebra curriculum. When interpreting the truthfulness of each statement, consider the following: - For statement (a), think about the spatial orientation of lines in three dimensions. - For statement (b), visualize the planes and their perpendicular relationship to a third plane. - Statement (c) requires understanding the relationship between lines and planes in 3D geometry. - Statement (d) is concerned with the fundamental nature of lines in Euclidean space. - Statement (e) explores the interaction between different geometric elements: planes and lines. Each statement can be verified through geometric principles and understanding of spatial relationships.
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