7-10-1 3d figures and cross sections

Front

What is a cross section?

Back

A cross section is the shape that you get when you cut through a 3D figure.

Front

What is a polyhedron?

Back

A polyhedron is a 3D figure made up of flat surfaces called faces, which are polygons.

Front

What are the edges of a 3D shape?

Back

Edges are the lines where two faces of a 3D shape meet.

Front

What is the base of a triangular prism?

Back

The base of a triangular prism is a triangle.

Front

What is the difference between a triangular pyramid and a triangular prism?

Back

A triangular pyramid has a triangular base and comes to a point (vertex), while a triangular prism has two triangular bases and rectangular sides.

Front

What are vertices in a 3D shape?

Back

Vertices are the points where edges meet in a 3D shape.

Front

What is a face in a 3D figure?

Back

A face is a flat surface on a 3D figure.

Front

Can a 3D figure have curved edges?

Back

No, a polyhedron cannot have curved edges; it must have straight edges.

Front

What is an example of a polyhedron?

Back

Examples of polyhedra include cubes, pyramids, and prisms.

Front

How many faces does a triangular prism have?

Back

A triangular prism has 5 faces.