10 Questions
Which type of lines will never cross because the distance between them remains constant?
Parallel lines
What is the special name given to lines that cross at a right angle?
Perpendicular lines
What type of lines cross or meet another line at one and only one point?
Intersecting lines
What is the range of angles that intersecting lines can form?
0 to 180 degrees
When graphing perpendicular lines, what must be true about their slopes?
They must be negative reciprocals
Which type of line is portrayed visually as a line segment with arrows at each end, indicating that the line continues indefinitely?
Straight line
What is the point called where lines or line segments intersect?
Intersection point
Can lines and line segments intersect at more than one point?
No, they can only intersect at one point.
Which of the following is an example of a curvilinear figure crossing a line?
Dollar symbol ($)
What do two intersecting lines often look similar to?
Letter 'X'
Study Notes
Properties of Lines
- Parallel lines will never cross because the distance between them remains constant.
Angle Relationships
- Lines that cross at a right angle (90°) are called perpendicular lines.
- Intersecting lines can form a range of angles between 0° and 180°.
Line Intersections
- Lines that cross or meet another line at one and only one point are called intersecting lines.
- The point where lines or line segments intersect is called the point of intersection.
Graphing Lines
- When graphing perpendicular lines, their slopes must be negative reciprocals of each other (m₁ = -1/m₂).
Line Representations
- A line is portrayed visually as a line segment with arrows at each end, indicating that the line continues indefinitely.
Line Intersections
- Lines and line segments can intersect at only one point.
- A circle crossing a line is an example of a curvilinear figure crossing a line.
- Two intersecting lines often resemble an X shape.
Test your knowledge on intersecting lines and their properties with this quiz! Explore the definitions, characteristics, and visual representations of intersecting lines.
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