Concept explainers
To describe: The number of lines that can be drawn in space through the vertex of a
Answer to Problem 18CE
Through point R on the line
in space infinite number of lines likecan be drawn perpendicular to
Explanation of Solution
Given information:
The lines drawn through point R in space perpendicular to side
shown in Figure-1.
Theorem used:
In a plane, through a point outside a line, there is exactly one line perpendicular to the given line.
But in a space, through a point outside a line, there is exactly one line perpendicular to the given line.
According to the theorem stated above, through the point R on the line
infinite number of lines likecan be drawn perpendicular to
The theorem that justify the answer is stated as:
In a plane, through a point outside a line, there is exactly one line perpendicular to the given line.
Because, there are infinite number of planes containing
Conclusion:
Through point R on the line
in space infinite number of lines likecan be drawn perpendicular to
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McDougal Littell Jurgensen Geometry: Student Edition Geometry
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- Elementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,Elementary Geometry for College StudentsGeometryISBN:9781285195698Author:Daniel C. Alexander, Geralyn M. KoeberleinPublisher:Cengage Learning