• #### Area of Parallelograms - Concept

##### Math›Geometry›Area
How to find the area of any parallelogram using rectangle area formulas.
• #### Area of Parallelograms - Problem 2

##### Math›Geometry›Area
How to find the base length of a parallelogram given the area.
• #### Area of Parallelograms - Problem 1

##### Math›Geometry›Area
How to calculate the area of a parallelogram, given the lengths of the sides and a height.
• #### Area of Parallelograms - Problem 3

##### Math›Geometry›Area
How to find the height of a parallelogram given two base lengths and a different height.
• #### 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 - Concept

##### Math›Geometry›Polygons
How to identify all of the special properties of parallelograms and use them to solve problems.
• #### 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.
• #### Parallelogram Properties - Problem 1

##### Math›Geometry›Polygons
How to solve for variables when given the angles of a parallelogram in terms of those variables.
• #### Area of Parallelograms - Problem 4

##### Math›Geometry›Area
How to find the area of a rectangle, given the perimeter and one side.
• #### Area With Determinants - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the area of a parallelogram using a determinant.
• #### Area With the Cross Product - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the area of a parallelogram using the cross product of the vectors that determine it.
• #### Area With the Cross Product - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to show that the magnitude of the cross product of two vectors gives the area of the parallelogram determined by those two vectors.
• #### Area of Trapezoids - Concept

##### Math›Geometry›Area
How to derive the area of a trapezoid formula using the area of a rectangle.
• #### Area and Perimeter of Rectangles - Concept

##### Math›Pre-Algebra›Introductory Geometry
Overview of area and perimeter formulas for parallelograms and rectangles
Tags:
• #### Area of Trapezoids - Problem 2

##### Math›Geometry›Area
How to find the area of a trapezoid given the lengths of the four sides and the height of the trapezoid.
• #### Area of Trapezoids - Problem 1

##### Math›Geometry›Area
How to find the length of a base in a triangle where the area, other base, and height are known.
• #### Area of Trapezoids - Problem 3

##### Math›Geometry›Area
How to find the area of a trapezoid where the base lengths, one side, and two angles are given.
• #### Rhombus Properties - Problem 2

##### Math›Geometry›Polygons
How to find the length of diagonals and angles in a rhombus.
• #### Rhombus Properties - Concept

##### Math›Geometry›Polygons
How to define a rhombus and compare it to a square and rectangle.
• #### Adding Vectors - Concept

##### Math›Precalculus›Vectors and Parametric Equations
How to add vectors geometrically two ways.