04/22/23 6.1: Solid Shapes

6.1: Solid ShapesExpectation:G2.2.1: Identify or sketch a possible three-dimensional figure, given two-dimensional views (e.g., nets, multiple views). Create a two-dimensional representation of a three-dimensional figure.

04/22/23 6.1: Solid Shapes

Isometric Drawing

An isometric drawing is a drawing in which the horizontal lines of the object are drawn at 30° angles to the horizontal. This gives us the appearance of 3 dimensions.

04/22/23 6.1: Solid Shapes

Isometric Drawing

30º30º

04/22/23 6.1: Solid Shapes

Draw a cube on isometric dot paper.

04/22/23 6.1: Solid Shapes

For edges that exist but cannot be seen, we draw dashed lines. These dashed lines are called hidden lines.

04/22/23 6.1: Solid Shapes

Make an isometric drawing of a stack of cubes that is 3 cubes tall.

04/22/23 6.1: Solid Shapes

Complete Activity #1 on page 373 (first 2 drawings in #1 & 2).

Complete Activity #2 on pages 373.

04/22/23 6.1: Solid Shapes

Orthographic Projections

Orthographic projections are views of an object in a direction perpendicular to the plane of the object.

04/22/23 6.1: Solid Shapes

Orthographic Views

There are 6 basic orthographic projection views:

front, back, top, bottom, right and left side views

04/22/23 6.1: Solid Shapes

Draw the six basic orthographic projection views of the figure below.

04/22/23 6.1: Solid Shapes

Draw the six basic orthographic projection views of the figure below.

04/22/23 6.1: Solid Shapes

Draw the 6 orthographic projection views of the figure below. What are the volume and surface area of the figure?

04/22/23 6.1: Solid Shapes

Assignment

pages 375-377, # 12-16 (evens), 21-26 (all), 28,

31-34, 38-43 (except 41)