###### Geometry & Measurement

Video Lesson: Complementary Angels and Supplementary Angles

In this lesson, Mr. J uses four examples to help you learn how to find the missing angle.

Video Lesson: Geometry - Introduction to Circles

Socratica gives you a brief introduction to circles, terms, and states the formulas for area and circumference.

Video Lesson: Finding the Circumference and Area of a Circle

In this easy-to-understand instructional video on a whiteboard, Brian McLogan uses one example to identify all the necessary steps in both formulas.

Pyramids

Video Lesson: Volume and Surface Area of Pyramids

Jessica Mulder teaches you the two necessary forumlas and how to apply them.

Angles:

Answer questions about supplementary, complimentary, vertical, and adjacent angles.

Circles:

Find the area, radius, and circumference of circles in this game.

Video Lesson: How to Find Surface Area and Volume of a Cylinder!

MashUp Math explains key concepts about the cylinder and how to apply its formulas to find surface area and volume.