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Spatial figure

is a three dimensional figure. It is made up of plane figure whose all sides are joined together to form a close figure.

DESCRIBING

SPATIAL

FIGURES

CONE

It has one cicular base and a curved surface which tapers to a point called summit of vertex.

RECTANGULAR PYRAMID

it is a pyramid with rectangular base. Its lateral faces are consist of four triangles. Other types of pyramid are triangular, pentagonal and hexagonal pyramids.

5 faces

5 vertices

8 edges

CUBE

A box-shaped solid object that has six identical square faces.

8 vertices

12 equal edges

6 faces

RECTANGULAR PRISM

A rectangular prism the two identical ends are rectangles, and as a result, the four sides between the ends are also two pairs of identical rectangle

2 base

4 lateral

8 vertices

12 edges

6 faces

SPHERE

a set of points in space that are equidistant from the center

TRIANGULAR PYRAMID

is a pyramid having a triangular base. Such a pyramid has four faces, six edges, as well as four vertices. The side faces are triangles while the triangular pyramid itself is a tetrahedron.

3 of the triangles always meet forming a vertex.

Prisms and pyramids are common polyhedrons.

Polyhedron is a three-dimensional geometric figure whose sides are polygons.

The base of a prism or a pyramid is a polygonal region of three or more sides.

Prism has at least two of the flat surfaces must have an angle between them. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type.

In a pyramid, the faces are triangular regions. The edges intersect at a vertex opposite the base.

EVALUATION

Complete the table.

Spatial figure No. of Faces No. of Edges No. of Vertices

1.cube

2.rectangular prism

3.sphere

4.cylinder

5.rectangular pyramid

6.triangular pyramid

7.cone

Assignment

Cut out pictures of objects from newspapers or magazines that are models of spatial figures describe each.

Prepared by:

Fherlyn Grace Oco Wayan

Remember!!

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CYLINDER

The surface generated by a straight line intersecting and moving along a closed plane curve

2 circular bases with curved surface

3 faces

no edges, no vertices because a cylinder has a curved surface, it is technically not a polyhedron. The terms "faces" and "edges" only apply to polyhedra which have flat surfaces, straight edges and vertices.