Concept explainers
To describe: The number of lines that can be drawn through the vertex of a
Answer to Problem 15CE
Through a point Q exactly one line can be drawn parallel to
Explanation of Solution
Given information:
The lines through point Q are parallel to side
shown in Figure-1.
Theorem used:
Through a point outside a line, there is exactly one line parallel to the given line.
According to the theorem stated above, through the point Q outside a line
exactly one line can be drawn parallel to
Another explanation: Suppose line is a line through Q parallel to Figure-2). If another line is drawn through Q it will make some
Thus, through a point Q outside a line
there is exactly one line parallel to
Conclusion:
Through a point Q exactly one line can be drawn parallel to
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McDougal Littell Jurgensen Geometry: Student Edition Geometry
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