Respuesta :
Answer:- Option A "ray" is the right term which matches with the definition.
Explanation:-
A ray is a line that has one fixed endpoint, and extends infinitely along the line from the fixed endpoint.
Therefore, the term which matches with the given definition is "ray".
Thus A linear set of points with a unique starting point and extending infinitely in one direction is called a ray.
A linear set of points with a unique starting point and extending infinitely in one direction is called a ray i.e., [tex]\fbox{\begin\\\ \bf option (a)\\\end{minispace}}[/tex].
Further explanation:
To define a linear set of points with a unique starting point and extending infinitely in one direction, check for the options as shown below.
Option (a): Ray
A ray is defined as a line that starts with one fixed point and extends infinitely along the line from the fixed point.
This means if a linear set of points with a unique starting point and extending infinitely in one direction then it represents a ray.
Therefore, the option (a) is correct.
Option (b): Line
A line is defined as a straight path whose start and end points are on infinity that means a line extends infinitely in both directions.
Therefore, option (b) is incorrect.
Option (c): Segment
A segment is defined as a part of a line that has a start point and an end point.
This means if start and end point is known then the line is defined as a segment.
Therefore, option (c) is incorrect.
Option (d): Perpendicular bisector
A perpendicular bisector is defined as a line that cuts a line segment into two parts perpendicularly that means the angle between the line segment and perpendicular bisector is [tex]90^{\circ}[/tex].
Therefore, option (d) is incorrect.
From the above options of a ray, a line, a segment and a perpendicular bisector we can conclude that given definition is equivalent to the definition of a ray.
Therefore, [tex]\fbox{\begin\\\ \bf option (a)\\\end{minispace}}[/tex] is correct.
Learn more:
1. Problem on the pair of undefined terms that is used to define a ray:
https://brainly.com/question/1087090
2. A problem on lines and angles: https://brainly.com/question/1953744
3. A problem on collinear points: https://brainly.com/question/5191341
Answer details:
Grade: Middle school.
Subject: Mathematics.
Chapter: Lines and angle.
Keywords: Line, line segment, ray, perpendicular, perpendicular bisector, point, parallel line, angle, angle bisector, perpendicular line, vertical line, horizontal line.
