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**Reviewing Properties of 3D figures**

MANY FACES Reviewing Properties of 3D figures

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NAME THAT SHAPE 2 3 8 1 5 7 6 4

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Today’s Lesson Today students will review the properties of 3 dimensional figures.

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**Vocabulary Polyhedron Polygon Face Base Pyramid Prism Cylinder Cone**

Vertex (Vertices) Edge Triangular Prism Triangular Pyramid Rectangular Prism Cube Square Pyramid Sphere

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Course 3 8-4 Three-Dimensional Figures “Solid” (70’s slang)

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Course 3 8-4 Three-Dimensional Figures "Solid" (Science)

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**A solid is a closed three dimensional (3D) figure.**

Course 3 8-4 Three-Dimensional Figures Solid A solid is a closed three dimensional (3D) figure. (Math Term)

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Solids Two-Dimensional (2D) Three Dimensional (3D)

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**Parts of a 3 Dimensional Figure**

Three-dimensional figures have faces, edges, and vertices. A FACE is a flat surface. An EDGE is where two faces meet. A VERTEX is where three or more edges meet.

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Vertices, Faces & Edges Write the number of Faces, Edges and vertices for each 3-D Figure in Activity I.

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**Naming 3D Figures Poly hedron Polyhedron faces many**

Some 3D Figures have special names, Poly hedron Polyhedron faces many

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**A Polyhedron is a 3D figure made of Polygons.**

Poly-many; gon-angle: a 2D shape with many angles

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**Naming 3D Figures Polyhedrons Non-Polyhedrons Ask the students:**

What shapes are in the non-polyhedron category? What makes Polyhedrons different from non-polyhedrons? The circles Students should recognize that polyhedrons do not have figures with circles.

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**Cylinders & Cones Cylinders 2 circular bases 1 face Cone**

Sphere 3D circle

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**Polyhedrons Breakdown**

Prisms Rectangular Faces Two Bases Pyramids Triangular Faces One Base

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**A Polyhedron is named for its base.**

Naming A Polyhedron A Polyhedron is named for its base. Bases: Hexagon Faces: Rectangles Hexagonal (Shape of Base) Prism

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**A Polyhedron is named for its base.**

Naming A Polyhedron A Polyhedron is named for its base. Base: Square Faces: Triangles (Shape of Base) Pyramid Square

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NAMING POLYHEDRONS Write the name of each 3-D Figure on your activity sheet.

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