# Ch 11: Geometric Solids

Watch online math video lessons to learn about cones, pyramids, prisms and platonic solids. These lessons are just a portion of our test prep course for the NY Regents geometry exam.

## Geometric Solids - Chapter Summary and Learning Objectives

Flat shapes are cool, but an ability to work with geometric solids can take your math skills into a whole other dimension. Use the lessons in this chapter to learn how 2-D shapes, like triangles, squares and circles, can be used to form pyramids, prisms, spheres and other 3-D shapes. Instructors show you how to calculate their volume and area and introduce you to a special type of polyhedron known as a platonic solid. Lessons in this chapter are designed to teach you about the following:

• Properties of polyhedrons and platonic solids
• Formulas for finding the area and volume of geometric solids
• Characteristics of prisms, pyramids, cylinders, cones and spheres

Video Objectives
Planes and the Polyhedron: Definition and Example Explore the 2-D surfaces of planes. Learn how they relate to polyhedrons, and get real-life examples of these shapes.
What Are Platonic Solids? - Definition and Types Survey characteristics of tetrahedrons, cubes, octahedrons, dodecahedrons and icosahedrons.
Prisms: Definition, Area & Volume Differentiate between triangular, square and pentagonal prisms. Calculate the surface area and volume for each type.
Pyramids: Definition, Area & Volume Apply the formulas used to calculate the surface area and volume of square and triangular pyramids.
What Are Cylinders? - Definition, Area & Volume Use the height of a cylinder and the radius of its base to determine surface area and volume.
Cones: Definition, Area & Volume Enter a cone's height, the length of its side and the radius of its base into the formulas for surface area and volume.
Spheres: Definition, Area & Volume Calculate a sphere's surface area and volume using the radius.

7 Lessons in Chapter 11: Geometric Solids
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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