Illustrative Math Alignment: Grade 7 Unit 7

Topic

3D Geometry

Definition

A net for an antiprism is a two-dimensional representation of an antiprism, showing its two polygonal bases and the alternating triangular faces laid out flat.

This is part of a collection of math video definitions related to the topic of 3D Geometry. These videos have Spanish audio. Note: The download is an MP4 video.

Topic

3D Geometry

Definition

A prism is a three-dimensional shape with two parallel, congruent bases and rectangular lateral faces.

Description

Prisms are important geometric shapes characterized by their two parallel, congruent bases and rectangular lateral faces. They are used in various fields, including architecture, engineering, and optics, to create structures and lenses. In mathematics, prisms are essential for understanding concepts of volume and surface area, with formulas like 

V = Base Area × Height 

This is part of a collection of math video definitions related to the topic of 3D Geometry. These videos have Spanish audio. Note: The download is an MP4 video.

Topic

3D Geometry

Definition

A rectangular prism is a three-dimensional shape with six rectangular faces, twelve edges, and eight vertices.

Description

Rectangular prisms are fundamental geometric shapes characterized by their six rectangular faces, twelve edges, and eight vertices. They are used in various fields, including architecture, engineering, and packaging, to create structures and containers. In mathematics, rectangular prisms are essential for understanding concepts of volume and surface area, with formulas like 

V = l × w × h 

This is part of a collection of math video definitions related to the topic of 3D Geometry. These videos have Spanish audio. Note: The download is an MP4 video.

Topic

3D Geometry

Definition

A triangular prism is a three-dimensional shape with two parallel triangular bases and three rectangular faces.

Description

Triangular prisms are important geometric shapes characterized by their two parallel triangular bases and three rectangular lateral faces. They are used in various fields, including architecture, engineering, and optics, to create structures and lenses. In mathematics, triangular prisms are essential for understanding concepts of volume and surface area, with formulas like 

V = Base Area × Height

This is part of a collection of math video definitions related to the topic of 3D Geometry. These videos have Spanish audio. Note: The download is an MP4 video.

Topic

3D Geometry

Definition

A vertical cross-section of an antiprism is the intersection of the antiprism with a vertical plane, resulting in a polygon.

This is part of a collection of math video definitions related to the topic of 3D Geometry. These videos have Spanish audio. Note: The download is an MP4 video.

Topic

3D Geometry

Definition

Vertical cross-sections of a triangular prism are the intersections of the prism with vertical planes, resulting in rectangles or triangles.

This is part of a collection of math video definitions related to the topic of 3D Geometry. These videos have Spanish audio. Note: The download is an MP4 video.

This is the transcript for the video: Geometry Applications—Antiprisms. In this video students learn the basics of antiprisms, in the context of New York’s Freedom Tower, which has an antiprism design. They learn the properties of antiprisms, with the focus on those with a square base.

To see the complete collection of video transcriptsy, click on this link.

This is the transcript for the video: Geometry Applications--Triangular Prisms. In this video students study a real-world application of triangular prisms: The Flat Iron Building in New York City. This building is an ideal example of a real-world prism and also provides a tie-in to right triangle geometry.

This is the transcript for the video: Geometry Applications--What Are Prisms? In this video students learn the basics of prisms and anti prisms. They learn the properties of triangular prisms, rectangular prisms, triangular antiprisms, and rectangular antiprisms.

To see the complete collection of video transcriptsy, click on this link.

This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important.

Study these animations to learn the basic properties of these 3D figures. In particular, make a note of their sides, edges, and vertices. Look for any symmetries they have. Look for polygon shapes that are familiar. Finally, think of real-world examples that use these  figures.

Below we also include information about Platonic solids and 2D nets of these 3D figures. To get a better understanding of these 3D figures, study these basic forms.

Topic

3D Geometry

Description

This video focuses on antiprisms, with One World Trade Center serving as a striking example. An antiprism is a polyhedron with two congruent polygonal bases rotated relative to each other and triangular sides connecting them. Key vocabulary includes antiprism, square base, triangular sides, and octagon. The geometry of the Freedom Tower is discussed, including its octagonal slices and symbolic height of 1776 feet. Applications highlight the dual role of the building as both an office space and a monument, emphasizing how its antiprism structure represents unity and homage to the Twin Towers.

Topic

3D Geometry

Topic

3D Geometry

Topic

3D Geometry