Cross-sections, Rotations, and Geometric Nets
Secondary Math 3 – Section 8.1
Names of ShapesCircle Square Rectangle
Triangle Trapezoid Pentagon
Hexagon Ellipse Octagon
Names of SolidsCube Prism Cylinder
Sphere Pyramid Cone
What is a cross-section?
Identify the cross-section of this solid.
Identify the cross-section of this solid.
Identify the cross-section of this solid.
Identify the cross-section of this solid.
Identify the cross-section of this solid.
Challenge Question
Can you cut the cube with a plane and create a cross-section with:
a) 3 sides b) 4 sidesc) 5 sides d) 6 sidese) 7 sides f) 8 sides
Cross-section Simulator
Geometric Nets – Example 1
Geometric Nets – Example 2
Geometric Nets – Example 3
Two-dimensional Rotations
What would happen if we rotated the function around the y-axis?
Two-dimensional Rotations
What would you have to rotate to obtain this 3-dimensional solid?