Power Point- Geometric Shape Properties
- 1. Geometric Shape Properties VERTEX FACES EDGES COMPARING 2-D AND 3-D SHAPES
- 2. Main Menu Content Posttest End Show
- 3. Content 1.1 •The Vertex is the point on our shape where two Vertex line segments join or One meet, or where two lines intersect (cross). Also known as a corner point. •Most objects or shapes have more than one vertex, which then are Vertex called Vertices. Three •On a 2-D shape such as the Triangle, we can see that it has 3 Vertices. Vertex Two
- 4. Content 1.2 Edge Two Edge • An Edge joins one vertex One to another and one face to another, usually in a line segment. •Edges have two important characteristics: An edge joins just two vertices An edge joins just two faces On the 2-D shape of a Rectangle we can see that Edge Edge Three there are 4 edges, or Four otherwise called sides.
- 5. Content 1.3 •In math we refer to Faces, on shapes. These are not to be confused with happy faces, or mean faces. •A Face is any of the bounding surfaces of a solid figure. •The face is bounded by a circuit of edges, an usually includes the flat region inside the boundary. •If we take a look at any 2-D shape we can see that there is only one face. When we start This circle looking at 3-Dimentional has only shapes we can see many more one face faces.
- 6. Content 1.4 •When talking about faces in our math class, we will most likely not be referring to 2-D shapes. They in fact all have one face and there is no need to count them. •However now that we are moving into 3-D objects and shapes we will in fact be talking about how many faces each object has. •Lets take a look at this Cube, and count the faces it has. YES! Exactly the cube has 6 faces.
- 7. Content 1.5 Have Vertices Have Vertices Have Edges Have Edges Have Many Faces Only One Face Can also be rolled, or Can be rolled (circle) moved Cannot be bounced Can be bounced Cannot be physically (sphere) picked up Can be picked up and Have one or more sides. manipulated. Have one or more sides.
- 8. Content 1.6 Shapes Flow Chart Shapes 2-D 3-D One Don’t Side More Roll than Roll one Circle side Cuboid Cylinder Cube Triangle Cone Rectangle Sphere Square Hexagon Octagon, Shapes Chart etc,
- 9. Assessment Time!! Directions: •Go to the link below and take the quiz. •Vertices are points of •Once you have finished intersections between with the quiz please go lines. down to the next object on •Edges join vertices and the left hand side titled faces together. edges, vertices, faces. •The Faces are bounded While there please take by edges and they are that assessment as well. usually a flat region. •Then come back here and answer my questions that follow. Quiz Link
- 10. How many Vertices does this cube have? a)4 b)6 c)12 d)8
- 11. What is the correct number of Edges of this rectangular prism? a)12 b)4 c)6 d)8
- 12. How many Faces does a Pyramid have? a)10 b)15 c)5 d)4
- 13. Correct Answer!! Nice Work!!
- 14. Incorrect Answer! Try Again!
- 15. Resources Wikipedia –polyhedron http://en.wikipedia.org/wiki/Polyhedron Wikipedia- vertex http://en.wikipedia.org/wiki/Vertex_(geometry) For the quiz I used this site- http://islamiclanguage.net/DIY53d.swf I found the shape chart on this site- http://www.fife- education.org.uk/inspiration/Images/Inspirationviews/g eneral/shapes.jpg I also used Learn NC for the NCSOS http://www.learnnc.org/scos/