# 6.1: Solid Shapes - PowerPoint PPT Presentation

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6.1: Solid Shapes. Expectation: 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. Isometric Drawing.

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6.1: Solid Shapes

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## 6.1: Solid Shapes

Expectation:

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.

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.

6.1: Solid Shapes

### Isometric Drawing

30º

30º

6.1: Solid Shapes

• Draw a cube on isometric dot paper.

6.1: Solid Shapes

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

6.1: Solid Shapes

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

6.1: Solid Shapes

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

Complete Activity #2 on pages 373.

6.1: Solid Shapes

### Orthographic Projections

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

6.1: Solid Shapes

### Orthographic Views

• There are 6 basic orthographic projection views:

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

6.1: Solid Shapes

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

6.1: Solid Shapes

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

6.1: Solid Shapes

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

6.1: Solid Shapes

### Assignment

• pages 375-377,

• # 12-16 (evens), 21-26 (all), 28,

• 31-34, 38-43 (except 41)

6.1: Solid Shapes