# Flashcards - Properties of Angles & Lines

Flashcards - Properties of Angles & Lines
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Skew lines
In three-dimensional geometry, skew lines are two lines that do not intersect and are not parallel
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Parallel lines
In geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel
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line segment
In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints
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vertex
In geometry, a vertex is a point where two or more curves, lines, or edges meet
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right angle
In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two adjacent parts of a straight line
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congruent angles
In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other
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congruent angles
In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other
right angle
In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two adjacent parts of a straight line
vertex
In geometry, a vertex is a point where two or more curves, lines, or edges meet
line segment
In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints
Parallel lines
In geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel
Skew lines
In three-dimensional geometry, skew lines are two lines that do not intersect and are not parallel
similar shapes
Two geometrical objects are called similar if they both have the same shape, or one has the same shape as the mirror image of the other
transversal
In geometry, a transversal is a line that passes through two lines in the same plane at two distinct points
intersecting lines
In geometry, an intersection is a point, line, or curve common in two or more objects
proportion
Proportion is a central principle of architectural theory and an important connection between mathematics and art
perpendicular
In elementary geometry, the property of being perpendicular is the relationship between two lines which meet at a right angle
line
The notion of line or straight line was introduced by ancient mathematicians to represent straight objects with negligible width and depth

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