Orthographic review for test 10/22/21

For hidden lines, the dashes should be ___ inch and the space between dashes should be ___ inch

1/8 ; 1/16

orthographic projections generally show ___ views of an object

3

How many views of an object are there?

6

The numbers of principal views are

6

In orthographic, we view the object at ___ degrees

90

What is a miter line?

a 45 degree line used to use the top view to help draw the side view or vice versa.

In orthographic projection an object is represented by two or three views on different planes which _________________

are mutually perpendicular projection planes

The point, from which the observer is assumed to view the object, is called

center of projection

Projection line is

continous thin line

Hidden lines are ___ but ___ than object lines

dark; thinner

Front view is represented by

frontal/vertical plane

Top view is represented by

horizontal plane

If hidden lines and object lines are collinear, ___ lines take dominance

object

In the Oblique projection an object is represented by how many views?

one view

In orthographic projection, the object is placed with one of its faces ______ to the picture plane.

parallel

The orthographic projection, projection lines are ____ to each other

parallel

In orthographic, the projection lines are ___ to the projection plane.

perpendicular

Side view is represented by

profile plane

The straight lines which are drawn from various points on the contour of an object to meet a plane are called as _________

projectors

Orthographic means

right angle projections

"Ortho" in orthographic means

straight

Glass Box Theory

the image is projected at 90 degrees to the surface of the glass box. the box is unfolded. the sides of the box are the principal views.

In orthographic projection, each projection view represents how many dimensions of an object?

two dimensions