Geometry Review – Concepts and Formulas
You may need a geometry review since geometry is included on many college placement exams.
Click on the links below for concept reviews, with illustrations, examples, and explanations.
Plane Geometry
Plane geometry includes two-dimensional shapes like triangles and circles.
Area of a Circle
Circumference of a Circle
Area of a Triangle
Types of Triangles
Area of a Square
Perimeter of a Square
Polygons
Coordinate Geometry
Coordinate geometry deals with lines in the coordinate x-y plane.
What is Slope?
Solving Linear Equations
Point-Slope Formula
Slope-Intercept Form