Our last video in the geometry series deals with three new 3D shapes. Click here to learn more about cylinders, cones and spheres.
Author Archive  Mike MᶜGarry

Mike served as a GMAT Expert at Magoosh, helping create hundreds of lesson videos and practice questions to help guide GMAT students to success. He was also featured as "member of the month" for over two years at GMAT Club. Mike holds an A.B. in Physics (graduating magna cum laude) and an M.T.S. in Religions of the World, both from Harvard. Beyond standardized testing, Mike has over 20 years of both private and public high school teaching experience specializing in math and physics. In his free time, Mike likes smashing foosballs into orbit, and despite having no obvious cranial deficiency, he insists on rooting for the NY Mets. Learn more about the GMAT through Mike's Youtube video explanations and resources like What is a Good GMAT Score? and the GMAT Diagnostic Test.
Geometry: Prisms and Pyramids
How much do you know about prisms and pyramids in geometry? Click here to check out our video, and learn all you need to know on the subject.
Geometry: Surface Area of Rectangular Solids
In this video we will explore the methods by which you can find the surface area of rectangular solids, and much more. Click here to begin learning!
Geometry: Arc of a Circle, Sector of a Circle
How do you measure the arc of a circle? How about a sector of a circle? Click here to find the answers to these questions and more!
Geometry: Circle Properties
What are circle properties? What is common to all circles that you need to be aware of in geometry? Click here to find out!
Geometry: Circles
We continue our geometry series by discussing the properties of circles. Click here to view our video, and begin learning the basics.
Geometry: Lines and Angles
Geometry is all about shapes, and most shapes are composed of lines and angles. So let’s begin learning geometry by discussing these two crucial elements!
Geometry: Regular Polygons
What exactly are regular polygons? You’d think “regular” means average or typical. But that couldn’t be farther from the truth! Click here to find out why.
Geometry: Area of Quadrilaterals
Do you know how to find the area of quadrilaterals? Well, in this video I will show you how to do this for various quadrilateral shapes, and more!
Geometry: Quadrilaterals
What are quadrilaterals? In this video, we explore that question and more. Enjoy — and then be sure to watch our other Geometry videos! Transcript: Quadrilaterals Now we can talk about quadrilaterals. A shape with four linesegment sides is a quadrilateral. So here we have four random quadrilaterals. These are actually called irregular quadrilaterals. It […]