4. FACESFACES
FACEFACE
• The 6 flat square surfaces that are theThe 6 flat square surfaces that are the
skin of the cube are itsskin of the cube are its facesfaces
5. A THIRD WAY IS BY LOOKING AT IT FROMA THIRD WAY IS BY LOOKING AT IT FROM
CERTAIN ANGLES TO GET DIFFERENT VIEWSCERTAIN ANGLES TO GET DIFFERENT VIEWS
BUILDING FRONT VIEW SIDE VIEW TOP VIEWBUILDING FRONT VIEW SIDE VIEW TOP VIEW
One can look at an object standing in frontOne can look at an object standing in front
of it or by the side of it or from above.of it or by the side of it or from above.
Each time one will get a different view.Each time one will get a different view.
6. SILICING GAMESILICING GAME
• When you give a vertical cut, you getWhen you give a vertical cut, you get
several pieces. Each face of the piece is aseveral pieces. Each face of the piece is a
square! We call this face a cross-sectionsquare! We call this face a cross-section
of the whole square. The cross section isof the whole square. The cross section is
nearly a square in this case.nearly a square in this case.
7. SILICING GAMESILICING GAME
• When you give a vertical cut, you getWhen you give a vertical cut, you get
several pieces. Each face of the piece is aseveral pieces. Each face of the piece is a
square! We call this face a cross-sectionsquare! We call this face a cross-section
of the whole square. The cross section isof the whole square. The cross section is
nearly a square in this case.nearly a square in this case.
8. OBLIQUEOBLIQUE SKETCHESSKETCHES
Here is a picture of a cube. It gives a clear ideaHere is a picture of a cube. It gives a clear idea
of how the cube looks like, when seen from theof how the cube looks like, when seen from the
front. You do not see certain faces. In the drawnfront. You do not see certain faces. In the drawn
picture, the lengths are not equal, as they shouldpicture, the lengths are not equal, as they should
be in a cube. Still , you are able to recognise itbe in a cube. Still , you are able to recognise it
as a cube. Such sketch of a solid is called anas a cube. Such sketch of a solid is called an
oblique sketchesoblique sketches
9. CUBECUBE
• It has 8 verticesIt has 8 vertices
• It has 12 edgesIt has 12 edges
• It also has 6 facesIt also has 6 faces
10. cylindercylinder
• It is in cylindrical shapeIt is in cylindrical shape
• Its shadow in the shape of rectangleIts shadow in the shape of rectangle
11. TRIANGLETRIANGLE
• It has three sidesIt has three sides
• The interior angle is 180 degreesThe interior angle is 180 degrees
12. circlecircle
• It is a circleIt is a circle
• It has no sides,edges,vertexIt has no sides,edges,vertex
