355 Videos for "lines"

Parallel and Skew Lines  Concept
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines. 
Parallel Planes and Lines  Concept
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to identify parallel lines, a line parallel to a plane, and two parallel planes. 
Parallel and Skew Lines  Concept
Math › Geometry › Geometry Building Blocks
How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines. 
Converse of Parallel Lines Theorem  Concept
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to take the converse of the parallel lines theorem. 
Converse of Parallel Lines Theorem  Problem 1
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to solve for a variable of alternating interior angles to make lines parallel. 
Converse of Parallel Lines Theorem  Problem 1
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to solve for a variable to make lines parallel. 
Converse of Parallel Lines Theorem  Problem 2
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to solve for a variable to make lines parallel. 
Converse of Parallel Lines Theorem  Concept
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to take the converse of the parallel lines theorem. 
Converse of Parallel Lines Theorem  Problem 2
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to solve for a variable of corresponding angles in order to make lines parallel. 
Lines in 3D  Problem 2
Math › Precalculus › Vectors and Parametric Equations
How to find the vector equation of a line parallel to a given line L that passes through a given point not on L. 
Perpendicular, Parallel and Skew Lines in Space  Problem 1
Math › Precalculus › Vectors and Parametric Equations
How to find the equation of a line parallel to and perpendicular to a given line in space. 
Constructing a Perpendicular at a Point on a Line  Concept
Math › Geometry › Constructions
How to construct a perpendicular line at a point on a line. 
Perpendicular, Parallel and Skew Lines in Space  Problem 2
Math › Precalculus › Vectors and Parametric Equations
How to determine whether two lines in space intersect, and if not, how to determine if they are parallel. 
Lines in 3D  Problem 1
Math › Precalculus › Vectors and Parametric Equations
How to find the vector equation, the parametric equations, and the symmetric equation of a line given two points on the line. 
Parallel Planes and Lines  Concept
Math › Geometry › Geometry Building Blocks
How to identify parallel lines, a line parallel to a plane, and two parallel planes. 
Parallel Planes and Lines  Problem 1
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to identify the intersection of two planes. 
Perpendicular, Parallel and Skew Lines in Space  Concept
Math › Precalculus › Vectors and Parametric Equations
How to determine whether two lines in space are parallel or perpendicular. 
Lines in 3D  Concept
Math › Precalculus › Vectors and Parametric Equations
How to find the vector and parametric equations of a line when given two points on the line. 
Constructing a Perpendicular to a Line  Problem 1
Math › Geometry › Constructions
How to construct a perpendicular through a point not on a line to a line.