1. PREPARING FOR SURFACE AREA AND VOLUME DRAWINGS, CROSS SECTIONS AND NETS

2. ISOMETRIC DRAWINGS A DRAWING THAT LOOKS 3 DIMENSIONAL.

3. FOUNDATIONAL DRAWING A DRAWING THAT SHOWS THE BASE OF THE STRUCTURE AND THE HEIGHT OF EACH PART.

4. ORTHOGRAPHIC PROJECTION IS A 2D DRAWING OF THE FRONT, TOP AND SIDE VIEWS OF 3D OBJECT.

5. 12.1 EXPLORE SOLIDS A ________ is a solid that is bounded by polygons, called _______, that enclose a single region of space. An _______ of a polyhedron is a line segment formed by the intersection of two faces. A _________ of a polyhedron is a point where three or more edges meet. Polyhedron faces Edge Vertex

6. TYPES OF SOLIDS:

7. CLASSIFYING SOLIDS Classifying Solids: Of the five solids on the previous slide, the prism and pyramid are polyhedra. To name a prism or pyramid, use the shape of the base.

8. PLATONIC SOLIDS

10. CROSS SECTIONS Cross Section: 2D shape on the surface of the intersection

11. EXAMPLE 4: SquareRectangleTrapezoid

12. NETS NET: THE TWO-DIMENSIONAL REPRESENTATION OF THE FACES OF A 3-DIMENSIONAL OBJECT. Find the surface area using the net. Rectangular prism surface area: 2(6)+ 2(18) + 2(12)= 72 square units Triangular prism surface area: 12 + 9+ 15 + 6+6= 48 square units