Exploring Cross Sections of 3D Figures

This video tutorial introduces the concept of cross sections of 3D figures. It explains how slicing a 3D object results in a 2D shape and provides real-life examples such as bread, toothpaste tubes, and trees. The tutorial covers different slicing techniques, including parallel, perpendicular, and angled cuts, and discusses the resulting shapes. It also includes practice exercises to identify cross sections and concludes with a review of the key concepts.

What shape results from slicing a loaf of bread horizontally?

• Rectangle

• Oval

• Circle

• Triangle

What is the cross section of a tube of toothpaste when sliced at the middle?

• Circle

• Square

• Rectangle

• Oval

What shape is seen when a doughnut is sliced horizontally?

• Rectangle with curved edges

• Circle

• Square

• Oval

Which method of slicing does not touch the base of the figure?

• Parallel

• Perpendicular

• None of the above

• At an angle

What shape is formed when a rectangular prism is sliced perpendicular to the base?

• Triangle

• Rectangle

• Circle

• Square

If a cube is sliced parallel to the base, what shape results?

• Rectangle

• Triangle

• Square

• Circle

What cross section results from slicing a sphere perpendicular to the base?

• Circle

• Triangle

• Rectangle

• Oval

Which figure forms a triangle when sliced perpendicular to the base?

• Rectangular prism

• Rectangular pyramid

• Sphere

• Cube

What shape results from slicing a rectangular pyramid parallel to the base?

• Circle

• Trapezoid

• Triangle

• Rectangle

Which of the following is not a possible cross section of a cube?

• Square

• Rectangle

• Circle

• Triangle