• #### Parametrizing a Circle - Problem 1

##### Math›Precalculus›Vectors and Parametric Equations
How to find parametric equations of a semicircle centered at (0,0) with radius 12, oriented counter-clockwise.
• #### Parametrizing a Circle - Concept

##### Math›Precalculus›Vectors and Parametric Equations
How to write the parametric equations of a circle centered at (0,0) with radius r, oriented counter-clockwise.
• #### Parametrizing a Circle - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How to write the parametric equations of a circle or semicircle centered at (0,0) with radius r, oriented clockwise.
• #### Parametrizing a Circle - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find parametric equations of a circle centered at (3,4) with radius 5, oriented counter-clockwise.
• #### Rotations - Concept

##### Math›Geometry›Transformations
How to define a rotation and what information is necessary to perform a rotation.
• #### Rotations - Problem 1

##### Math›Geometry›Transformations
How to describe the transformation (x, y) -> (-x, -y).
• #### Rotations - Problem 3

##### Math›Geometry›Transformations
How to find the angle of rotation in an isometry where the point of rotation is not given.
• #### Rotations - Problem 2

##### Math›Geometry›Transformations
How to rotate a given figure a given degree measure about a given point.
• #### Rotations - Problem 4

##### Math›Geometry›Transformations
How to rotate a point about the origin a given degree measure in the coordinate plane.