12-1 3d Figures

12-1 3D Figures

SIDE VIEW

TOP VIEW

Orthagonal Drawing: a 2-dimensional perspective drawing of a 3D object.

“Corner View” or “Perspective View”

Top View

Left Side View

Front View

Left Side View

Back View

2D Theatre Presents: POLYGONS:

All sides are straight segments

Polyhedron: 3-dimensional solids with all flat surfaces, each one being a polygon.

CUBE

CYLINDER

• Prism: a type of polyhedron that has two congruent, parallel faces, called “bases”…

…with the other faces being parallelograms…

Pyramid(uh)

Regular Polyhedra: 3D solid where all the faces AND edges are congruent.

“Tetrahedron”

“Hexahedron” aka: “Cube”

“Octahedron”

“Dodecahedron”

“Icosahedron”

Other Solids SPHERE

CYLINDER

CONE

“Cross-Section”