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Polar Coordinate Plane

Learn to describe the world using the language of distance and angle.

25 Lessons323 Exercises

Angle and Radius

Plotting in Polar

Identifying Points

Negative Angles

Beyond 360°

Level Review

Radial Rays

Circular Gridlines

Annuli and Disks

Describing Sectors

Selecting Points

Identifying Features

Level Review

Arcs and Arc Length

Arc Lengths and Angles

Angles from Arc Lengths

Level Review

Angles in Radians

Plotting with Radians

Radian Coordinates

Regions with Radians

Radian Lines and Sectors

Level Review

Rotating Points

Coordinate-Wise Rotation

Dilating Points

Coordinate-Wise Dilation

Combining Transformations

Choosing Transformations

Level Review


Course description

We'll first learn how the polar coordinate system works using angles in degrees. Next we'll describe features in the coordinate plane in polar terms, before progressing to arclengths and radians as a measurement of angle.


Topics covered

  • Polar coordinates.
  • Plotting points in polar.
  • Rays and Circles.
  • Describing region in the polar plane with inequalities.
  • Arclengths and radians.
  • Using radians with polar coordinates.

Prerequisites and next steps

This course assumes familiarity with the coordinate plane, angles and basic algebra.