• #### Constructing Parallel Lines - Problem 1

##### Math›Geometry›Constructions
How to construct parallel lines using corresponding angles.
• #### Parallelogram Properties - Concept

##### Math›Geometry›Polygons
How to identify all of the special properties of parallelograms and use them to solve problems.
• #### Parallelogram Properties - Problem 3

##### Math›Geometry›Polygons
How to find the lengths of the diagonals in a parallelogram if they are given in terms of a variable.
• #### Parallelogram Properties - Problem 2

##### Math›Geometry›Polygons
How to find the perimeter of a parallelogram when the sides are given in terms of a variable.
• #### Constructing Parallel Lines - Problem 3

##### Math›Geometry›Constructions
How to construct parallel lines using alternate exterior angles.
• #### 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.
• #### Trapezoid Arch and Panel Design Problem - Concept

##### Math›Geometry›Polygons
How to strategize about solving a problem with trapezoidal arches.
• #### Trapezoid Arch and Panel Design Problem - Problem 1

##### Math›Geometry›Polygons
How to find the measures of a trapezoid in a 10-panel design.
• #### Trapezoid Arch and Panel Design Problem - Problem 2

##### Math›Geometry›Polygons
How to find the measures of a trapezoid in a five-block arch.
• #### 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.
• #### Polygons - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Formulas for interior and exterior angles of regular polygons
Tags:
• #### Constructing Parallel Lines - Concept

##### Math›Geometry›Constructions
How to construct parallel lines using three different methods.