• #### Alternate Interior Angles - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define alternate interior angles and their special properties.
• #### Alternate Exterior Angles - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define alternate exterior angles and their special properties.
• #### Alternate Interior Angles - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find a missing interior angle if the alternate is given.
• #### 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.
• #### Alternate Exterior Angles - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find angles in terms of variables that are AEA.
• #### Alternate Exterior Angles - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find angles in terms of variables that are AEA.
• #### Constructing Parallel Lines - Problem 2

##### Math›Geometry›Constructions
How to construct parallel lines using alternate interior angles.
• #### Constructing Parallel Lines - Problem 3

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

##### Math›Geometry›Constructions
How to construct parallel lines using corresponding angles.
• #### Constructing Parallel Lines - Concept

##### Math›Geometry›Constructions
How to construct parallel lines using three different methods.
• #### Permutations - Problem 4

##### Math›Algebra 2›Combinatorics
How to calculate the number of different ways to line up objects when alternation is required.
• #### Permutations - Problem 4

##### Math›Precalculus›Topics in Discrete Math
How to calculate the number of different ways to line up objects when alternation is required.
• #### 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.
• #### 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.