Understanding Octagonal Pyramids

In this video, Mr. Jay explains how to identify and count the faces, edges, and vertices of an octagonal pyramid. The video begins with an introduction to the topic, followed by a detailed walkthrough of counting each geometric feature. The octagonal pyramid is shown to have nine faces, sixteen edges, and nine vertices. The video concludes with a summary of these findings.

What is the main topic discussed in the video?

• Properties of an octagonal pyramid

• Properties of a square

• Properties of a cube

• Properties of a triangular prism

How many total faces does an octagonal pyramid have?

• Seven

• Eight

• Ten

• Nine

What shape is the base of an octagonal pyramid?

• Pentagon

• Octagon

• Square

• Triangle

How many triangular faces are there in an octagonal pyramid?

• Eight

• Six

• Nine

• Seven

How many total edges are present in an octagonal pyramid?

• Fourteen

• Sixteen

• Fifteen

• Seventeen

What is an edge in the context of a pyramid?

• A flat surface

• A corner point

• A curved line

• A line segment where two faces meet

How many vertices does an octagonal pyramid have?

• Seven

• Eight

• Nine

• Ten

What defines a vertex in a pyramid?

• A flat surface

• A curved surface

• A line segment

• A point where three or more edges meet

Which of the following is true about an octagonal pyramid?

• It has 10 faces

• It has 16 edges

• It has 8 vertices

• It has a circular base

What is the total number of faces, edges, and vertices in an octagonal pyramid?

• 10 faces, 17 edges, 10 vertices

• 8 faces, 16 edges, 8 vertices

• 9 faces, 15 edges, 9 vertices

• 9 faces, 16 edges, 9 vertices