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Created by Mandy Plunkett Modified by Charlotte Stripling

Exploring Geometric Solids. Created by Mandy Plunkett Modified by Charlotte Stripling. Plane Figures. Sphere. A 3D figure shaped like a ball. Formed by … rotating a circle. How can you form a sphere?. Cylinder. A 3D figure that looks like a tube with 2 circular bases. Formed by …

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Created by Mandy Plunkett Modified by Charlotte Stripling

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  1. Exploring Geometric Solids Created by Mandy Plunkett Modified by Charlotte Stripling

  2. Plane Figures

  3. Sphere A 3D figure shaped like a ball. Formed by … rotating a circle

  4. How can you form a sphere?

  5. Cylinder A 3D figure that looks like a tube with 2 circular bases. Formed by … Rotating a rectangle or square, Translating a circle

  6. How can you form a cylinder?

  7. Cone A 3D figure with a circular base and a point opposite the base. Formed by … rotating a triangle, stacking similar circles (smaller and smaller until a point)

  8. How can you form a cone?

  9. Cube A rectangular prism with all edges the same length. Formed by … translating a square (its exact side length)

  10. How can you form a cube?

  11. Rectangular Prism Formed by … translating a square or rectangle A 3d figure that looks like a box.

  12. How can you form a rectangular prism?

  13. Triangular Prism A prism whose bases are triangles.     Formed by … translating a triangle

  14. How can you form a pyramid? • Stack similar figures – smaller and smaller up to a point. • Similar triangles – triangular pyramid • Similar rectangles – rectangular pyramid • Similar squares – square pyramid • Similar pentagons – pentagonal pyramid • Similar hexagons – hexagonal pyramid

  15. Square Pyramid Formed by … stacking similar squares (smaller and smaller until a point)

  16. Triangular Pyramid Formed by … stacking similar triangles (smaller and smaller until a point)

  17. Hexagonal Pyramid Formed by … stacking similar hexagons (smaller and smaller until a point)

  18. DEFINITIONS • Cross Section: the intersection of a plane and a solid. Formed by slicing through a 3D figure and looking at the inside 2D plane figure. • Ellipse: an oval 2D figure. Formed by slicing a 3D figure at an angle to its circular base (oblique).

  19. What cross-sections can I make from a sphere? • Circle (any direction)

  20. What cross-sections can I make from a cube? • Square (vertical or horizontal), triangle (corners), hexagon (oblique), pentagon (oblique), parallelogram (oblique), rectangle (diagonal) To see all cross sections click on link. http://www.learner.org/courses/learningmath/geometry/session9/part_c/index.html http://www.learner.org/courses/learningmath/geometry/session9/part_c/index.html

  21. What cross-sections can I make from a cylinder? • Rectangle (vertical), Circle (horizontal), Ellipse (oblique)

  22. What cross-sections can I make from a cone? • Triangle (vertical), Circle (horizontal), Ellipse (oblique)

  23. What cross-sections can I make from a rectangular prism? • Rectangle (vertical or horizontal), Triangle (corners)

  24. What cross-sections can I make from a square pyramid? • Triangle (vertical), Square (horizontal), Trapezoid (vertical not through vertex)

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