• #### Constructing Parallel Lines - Concept

##### Math›Geometry›Constructions
How to construct parallel lines using three different methods.
• #### Parallel and Perpendicular Lines - Problem 4

##### Math›Algebra›Linear Equations and Their Graphs
Classifying quadrilaterals given based on the slopes of parallel and perpendicular lines
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• #### Parallel and Perpendicular Lines - Problem 7

##### Math›Algebra›Linear Equations and Their Graphs
Write the equation for a line parallel to a given line through a given slope in point slope and then slope intercept form, including fractional slopes
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• #### Parallel and Perpendicular Lines - Problem 9

##### Math›Algebra›Linear Equations and Their Graphs
Write the equation for a line parallel to a given line through a given slope in point slope and then slope intercept form with integer slope
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• #### Cyclic Quadrilaterals and Parallel Lines in Circles - Concept

##### Math›Geometry›Circles
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.
• #### Constructing Parallel Lines - Problem 3

##### Math›Geometry›Constructions
How to construct parallel lines using alternate exterior angles.
• #### Parallel Planes and Lines - Problem 1

##### Math›Precalculus›Equations of Lines, Parabolas and Circles
How to identify the intersection of two planes.
• #### Parallel and Perpendicular Lines - Problem 2

##### Math›Algebra›Linear Equations and Their Graphs
How to write the equation of a line perpendicular to a given line through a given point.
• #### Parallel and Perpendicular Lines - Problem 3

##### Math›Algebra›Linear Equations and Their Graphs
How to write the equation of a line perpendicular to a given line that is not in slope intercept form.
• #### Parallel and Perpendicular Lines - Problem 8

##### Math›Algebra›Linear Equations and Their Graphs
Determining whether two lines are parallel from their equations
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• #### Cyclic Quadrilaterals and Parallel Lines in Circles - Problem 2

##### Math›Geometry›Circles
How to calculate the measure of an arc created by a cyclic parallelogram.
• #### Cyclic Quadrilaterals and Parallel Lines in Circles - Problem 1

##### Math›Geometry›Circles
How to calculate angles in a cyclic quadrilateral given arc measures and two angle measures.
• #### Parallel and Perpendicular Lines - Problem 10

##### Math›Algebra›Linear Equations and Their Graphs
Write the equation for a line perpendicular to a given line through a given slope in point slope and then slope intercept form
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• #### Parallel and Perpendicular Lines - Problem 6

##### Math›Algebra›Linear Equations and Their Graphs
Determining whether or not two equations represent perpendicular lines
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• #### Parallel Planes and Lines - Problem 1

##### Math›Geometry›Geometry Building Blocks
How to identify the intersection of two planes.
• #### Parallel and Perpendicular Lines - Problem 5

##### Math›Algebra›Linear Equations and Their Graphs
Using slopes to determine whether or not three coordinates determine a right triangle
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• #### Corresponding Angles - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to identify corresponding angles created by two parallel lines and a transversal.
• #### Alternate Interior Angles - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to fine a missing angles created by two parallel lines and two transversals.
• #### Corresponding Angles - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define corresponding angles and their special properties.
• #### Corresponding Angles - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find a missing angle using corresponding angles.